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data-event-name="pinnable-header.vector-toc.pin">move to sidebar</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">hide</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">(Top)</div> </a> </li> <li id="toc-SSE4_subsets" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#SSE4_subsets"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>SSE4 subsets</span> </div> </a> <ul id="toc-SSE4_subsets-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Name_confusion" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Name_confusion"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Name confusion</span> </div> </a> <ul id="toc-Name_confusion-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-New_instructions" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#New_instructions"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>New instructions</span> </div> </a> <button aria-controls="toc-New_instructions-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle New instructions subsection</span> </button> <ul id="toc-New_instructions-sublist" class="vector-toc-list"> <li id="toc-SSE4.1" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#SSE4.1"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.1</span> <span>SSE4.1</span> </div> </a> <ul id="toc-SSE4.1-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SSE4.2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#SSE4.2"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.2</span> <span>SSE4.2</span> </div> </a> <ul id="toc-SSE4.2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-POPCNT_and_LZCNT" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#POPCNT_and_LZCNT"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.3</span> <span>POPCNT and LZCNT</span> </div> </a> <ul id="toc-POPCNT_and_LZCNT-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SSE4a" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#SSE4a"> <div class="vector-toc-text"> <span class="vector-toc-numb">3.4</span> <span>SSE4a</span> </div> </a> <ul id="toc-SSE4a-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Supporting_CPUs" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Supporting_CPUs"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Supporting CPUs</span> </div> </a> <ul id="toc-Supporting_CPUs-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div 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class="noprint">From Wikipedia, the free encyclopedia</div> </div> <div id="contentSub"><div id="mw-content-subtitle"><span class="mw-redirectedfrom">(Redirected from <a href="/w/index.php?title=SSE4.2&redirect=no" class="mw-redirect" title="SSE4.2">SSE4.2</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><div class="shortdescription nomobile noexcerpt noprint searchaux" style="display:none">SIMD CPU instruction set</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid #fc3}.mw-parser-output .ambox-move{border-left:10px solid #9932cc}.mw-parser-output .ambox-protection{border-left:10px solid #a2a9b1}.mw-parser-output .ambox .mbox-text{border:none;padding:0.25em 0.5em;width:100%}.mw-parser-output .ambox .mbox-image{border:none;padding:2px 0 2px 0.5em;text-align:center}.mw-parser-output .ambox .mbox-imageright{border:none;padding:2px 0.5em 2px 0;text-align:center}.mw-parser-output .ambox .mbox-empty-cell{border:none;padding:0;width:1px}.mw-parser-output .ambox .mbox-image-div{width:52px}@media(min-width:720px){.mw-parser-output .ambox{margin:0 10%}}@media print{body.ns-0 .mw-parser-output .ambox{display:none!important}}</style><table class="box-Technical plainlinks metadata ambox ambox-style ambox-technical" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/40px-Edit-clear.svg.png" decoding="async" width="40" height="40" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/60px-Edit-clear.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/f/f2/Edit-clear.svg/80px-Edit-clear.svg.png 2x" data-file-width="48" data-file-height="48" /></span></span></div></td><td class="mbox-text"><div class="mbox-text-span">This article <b>may be too technical for most readers to understand</b>.<span class="hide-when-compact"> Please <a class="external text" href="https://en.wikipedia.org/w/index.php?title=SSE4&action=edit">help improve it</a> to <a href="/wiki/Wikipedia:Make_technical_articles_understandable" title="Wikipedia:Make technical articles understandable">make it understandable to non-experts</a>, without removing the technical details.</span> <span class="date-container"><i>(<span class="date">July 2019</span>)</i></span><span class="hide-when-compact"><i> (<small><a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a></small>)</i></span></div></td></tr></tbody></table> <p><b>SSE4</b> (<b>Streaming SIMD Extensions 4</b>) is a <a href="/wiki/SIMD" class="mw-redirect" title="SIMD">SIMD</a> CPU <a href="/wiki/Instruction_set" class="mw-redirect" title="Instruction set">instruction set</a> used in the <a href="/wiki/Intel" title="Intel">Intel</a> <a href="/wiki/Core_(microarchitecture)" class="mw-redirect" title="Core (microarchitecture)">Core microarchitecture</a> and <a href="/wiki/AMD_K10" class="mw-redirect" title="AMD K10">AMD K10 (K8L)</a>. It was announced on September 27, 2006, at the Fall 2006 <a href="/wiki/Intel_Developer_Forum" title="Intel Developer Forum">Intel Developer Forum</a>, with vague details in a <a href="/wiki/White_paper" title="White paper">white paper</a>;<sup id="cite_ref-:0_1-0" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> more precise details of 47 instructions became available at the Spring 2007 Intel Developer Forum in <a href="/wiki/Beijing" title="Beijing">Beijing</a>, in the presentation.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> SSE4 extended the <a href="/wiki/SSE3" title="SSE3">SSE3</a> instruction set which was released in early 2004. All software using previous Intel SIMD instructions (ex. SSE3) are compatible with modern microprocessors supporting SSE4 instructions. All existing software continues to run correctly without modification on microprocessors that incorporate SSE4, as well as in the presence of existing and new applications that incorporate SSE4.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>Like other previous generation CPU SIMD instruction sets, SSE4 supports up to 16 registers, each 128-bits wide which can load four 32-bit integers, four 32-bit single precision floating point numbers, or two 64-bit double precision floating point numbers.<sup id="cite_ref-:0_1-1" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> SIMD operations, such as vector element-wise addition/multiplication and vector scalar addition/multiplication, process multiple bytes of data in a single CPU instruction. The parallel operation packs noticeable increases in performance. SSE4.2 introduced new SIMD string operations, including an instruction to compare two string fragments of up to 16 bytes each.<sup id="cite_ref-:0_1-2" class="reference"><a href="#cite_note-:0-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> SSE4.2 is a subset of SSE4 and it was released a few years after the initial release of SSE4. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="SSE4_subsets">SSE4 subsets</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=1" title="Edit section: SSE4 subsets"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Intel SSE4 consists of 54 instructions. A subset consisting of 47 instructions, referred to as <i>SSE4.1</i> in some Intel documentation, is available in <a href="/wiki/Penryn_(microarchitecture)" title="Penryn (microarchitecture)">Penryn</a>. Additionally, <i>SSE4.2</i>, a second subset consisting of the seven remaining instructions, is first available in <a href="/wiki/Nehalem_(microarchitecture)" title="Nehalem (microarchitecture)">Nehalem</a>-based <a href="/wiki/Core_i7" class="mw-redirect" title="Core i7">Core i7</a>. Intel credits feedback from developers as playing an important role in the development of the instruction set. </p><p>Starting with <a href="/wiki/K10_(microarchitecture)" class="mw-redirect" title="K10 (microarchitecture)">Barcelona</a>-based processors, <a href="/wiki/AMD" title="AMD">AMD</a> introduced the <i>SSE4a</i> instruction set, which has four SSE4 instructions and four new SSE instructions. These instructions are not found in Intel's processors supporting SSE4.1 and AMD processors only started supporting Intel's SSE4.1 and SSE4.2 (the full SSE4 instruction set) in the <a href="/wiki/Bulldozer_(microarchitecture)" title="Bulldozer (microarchitecture)">Bulldozer</a>-based FX processors. With SSE4a the misaligned SSE feature was also introduced which meant unaligned load instructions were as fast as aligned versions on aligned addresses. It also allowed disabling the alignment check on non-load SSE operations accessing memory.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> Intel later introduced similar speed improvements to unaligned SSE in their Nehalem processors, but did not introduce misaligned access by non-load SSE instructions until <a href="/wiki/Advanced_Vector_Extensions" title="Advanced Vector Extensions">AVX</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Name_confusion">Name confusion</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=2" title="Edit section: Name confusion"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>What is now known as <a href="/wiki/SSSE3" title="SSSE3">SSSE3</a> (Supplemental Streaming <a href="/wiki/SIMD" class="mw-redirect" title="SIMD">SIMD</a> Extensions 3), introduced in the <a href="/wiki/Intel_Core_2" title="Intel Core 2">Intel Core 2</a> processor line, was referred to as SSE4 by some media until Intel came up with the SSSE3 moniker. Internally dubbed Merom New Instructions, Intel originally did not plan to assign a special name to them, which was criticized by some journalists.<sup id="cite_ref-sse4criticism_6-0" class="reference"><a href="#cite_note-sse4criticism-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Intel eventually cleared up the confusion and reserved the SSE4 name for their next instruction set extension.<sup id="cite_ref-sse4newinstructions_7-0" class="reference"><a href="#cite_note-sse4newinstructions-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>Intel is using the marketing term <i>HD Boost</i> to refer to SSE4.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="New_instructions">New instructions</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=3" title="Edit section: New instructions"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Unlike all previous iterations of SSE, SSE4 contains instructions that execute operations which are not specific to multimedia applications. It features a number of instructions whose action is determined by a constant field and a set of instructions that take XMM0 as an implicit third operand. </p><p>Several of these instructions are enabled by the single-cycle shuffle engine in Penryn. (Shuffle operations reorder bytes within a register.) </p> <div class="mw-heading mw-heading3"><h3 id="SSE4.1">SSE4.1</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=4" title="Edit section: SSE4.1"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>These instructions were introduced with <a href="/wiki/Penryn_(microarchitecture)" title="Penryn (microarchitecture)">Penryn microarchitecture</a>, the 45 nm shrink of Intel's <a href="/wiki/Core_(microarchitecture)" class="mw-redirect" title="Core (microarchitecture)">Core microarchitecture</a>. Support is indicated via the CPUID.01H:ECX.SSE41[Bit 19] flag. </p> <table class="wikitable"> <tbody><tr> <th scope="col">Instruction </th> <th scope="col">Description </th></tr> <tr> <td><code>MPSADBW</code> </td> <td>Compute eight offset sums of absolute differences, four at a time (i.e., |x<sub>0</sub>−y<sub>0</sub>|+|x<sub>1</sub>−y<sub>1</sub>|+|x<sub>2</sub>−y<sub>2</sub>|+|x<sub>3</sub>−y<sub>3</sub>|, |x<sub>0</sub>−y<sub>1</sub>|+|x<sub>1</sub>−y<sub>2</sub>|+|x<sub>2</sub>−y<sub>3</sub>|+|x<sub>3</sub>−y<sub>4</sub>|, ..., |x<sub>0</sub>−y<sub>7</sub>|+|x<sub>1</sub>−y<sub>8</sub>|+|x<sub>2</sub>−y<sub>9</sub>|+|x<sub>3</sub>−y<sub>10</sub>|); this operation is important for some <a href="/wiki/High-definition_video" title="High-definition video">HD</a> <a href="/wiki/Codec" title="Codec">codecs</a>, and allows an 8×8 block difference to be computed in fewer than seven cycles.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> One bit of a three-bit immediate operand indicates whether y<sub>0</sub> .. y<sub>10</sub> or y<sub>4</sub> .. y<sub>14</sub> should be used from the destination operand, the other two whether x<sub>0</sub>..x<sub>3</sub>, x<sub>4</sub>..x<sub>7</sub>, x<sub>8</sub>..x<sub>11</sub> or x<sub>12</sub>..x<sub>15</sub> should be used from the source. </td></tr> <tr> <td><code>PHMINPOSUW</code> </td> <td>Sets the bottom unsigned 16-bit word of the destination to the smallest unsigned 16-bit word in the source, and the next-from-bottom to the index of that word in the source. </td></tr> <tr> <td><code>PMULDQ</code> </td> <td>Packed 32-bit signed "long" multiplication, two (1st and 3rd) out of four packed integers multiplied giving two packed 64-bit results. </td></tr> <tr> <td><code>PMULLD</code> </td> <td>Packed 32-bit signed "low" multiplication, four packed sets of integers multiplied giving four packed 32-bit results. </td></tr> <tr> <td><code>DPPS</code>, <code>DPPD</code> </td> <td><a href="/wiki/Dot_product_instruction" class="mw-redirect" title="Dot product instruction">Dot product</a> for AOS (Array of Structs) data. This takes an immediate operand consisting of four (or two for DPPD) bits to select which of the entries in the input to multiply and accumulate, and another four (or two for DPPD) to select whether to put 0 or the dot-product in the appropriate field of the output. </td></tr> <tr> <td><code>BLENDPS</code>, <code>BLENDPD</code>, <code>BLENDVPS</code>, <code>BLENDVPD</code>, <code>PBLENDVB</code>, <code>PBLENDW</code> </td> <td>Conditional copying of elements in one location with another, based (for non-V form) on the bits in an immediate operand, and (for V form) on the bits in register XMM0. </td></tr> <tr> <td><code>PMINSB</code>, <code>PMAXSB</code>, <code>PMINUW</code>, <code>PMAXUW</code>, <code>PMINUD</code>, <code>PMAXUD</code>, <code>PMINSD</code>, <code>PMAXSD</code> </td> <td>Packed minimum/maximum for different integer operand types </td></tr> <tr> <td><code>ROUNDPS</code>, <code>ROUNDSS</code>, <code>ROUNDPD</code>, <code>ROUNDSD</code> </td> <td>Round values in a floating-point register to integers, using one of four rounding modes specified by an immediate operand </td></tr> <tr> <td><code>INSERTPS</code>, <code>PINSRB</code>, <code>PINSRD</code>/<wbr /><code>PINSRQ</code>, <code>EXTRACTPS</code>, <code>PEXTRB</code>, <code>PEXTRD/PEXTRQ</code> </td> <td>The INSERTPS and PINSR instructions read 8, 16 or 32 bits from an x86 register or memory location and inserts it into a field in the destination register given by an immediate operand. EXTRACTPS and PEXTR read a field from the source register and insert it into an x86 register or memory location. For example, PEXTRD eax, [xmm0], 1; EXTRACTPS [addr+4*eax], xmm1, 1 stores the first field of xmm1 in the address given by the first field of xmm0. </td></tr> <tr> <td><code>PMOVSXBW</code>, <code>PMOVZXBW</code>, <code>PMOVSXBD</code>, <code>PMOVZXBD</code>, <code>PMOVSXBQ</code>, <code>PMOVZXBQ</code>, <code>PMOVSXWD</code>, <code>PMOVZXWD</code>, <code>PMOVSXWQ</code>, <code>PMOVZXWQ</code>, <code>PMOVSXDQ</code>, <code>PMOVZXDQ</code> </td> <td>Packed sign/zero extension to wider types </td></tr> <tr> <td><code>PTEST</code> </td> <td>This is similar to the <code>TEST</code> instruction, in that it sets the <a href="/wiki/Zero_flag" title="Zero flag">Z flag</a> to the result of an AND between its operands: ZF is set, if DEST AND SRC is equal to 0. Additionally it sets the C flag if (NOT DEST) AND SRC equals zero. <p>This is equivalent to setting the Z flag if none of the bits masked by SRC are set, and the C flag if all of the bits masked by SRC are set. </p> </td></tr> <tr> <td><code>PCMPEQQ</code> </td> <td>Quadword (64 bits) compare for equality </td></tr> <tr> <td><code>PACKUSDW</code> </td> <td>Convert signed DWORDs into unsigned WORDs with saturation. </td></tr> <tr> <td><code>MOVNTDQA</code> </td> <td>Efficient read from write-combining memory area into SSE register; this is useful for retrieving results from peripherals attached to the memory bus. </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="SSE4.2">SSE4.2</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=5" title="Edit section: SSE4.2"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>SSE4.2 added STTNI (String and Text New Instructions),<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> several new instructions that perform character searches and comparison on two operands of 16 bytes at a time. These were designed (among other things) to speed up the parsing of <a href="/wiki/XML" title="XML">XML</a> documents.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> It also added a <code>CRC32</code> instruction to compute <a href="/wiki/Cyclic_redundancy_check" title="Cyclic redundancy check">cyclic redundancy checks</a> as used in certain data transfer protocols. These instructions were first implemented in the <a href="/wiki/Nehalem_(microarchitecture)" title="Nehalem (microarchitecture)">Nehalem</a>-based <a href="/wiki/Intel_Core_i7" class="mw-redirect" title="Intel Core i7">Intel Core i7</a> product line, and complete the SSE4 instruction set. AMD on the other hand first added support starting with the <a href="/wiki/Bulldozer_(microarchitecture)" title="Bulldozer (microarchitecture)">Bulldozer microarchitecture</a>. Support is indicated via the CPUID.01H:ECX.SSE42[Bit 20] flag. </p><p><a href="/wiki/Windows_11,_version_24H2" title="Windows 11, version 24H2">Windows 11 24H2</a> requires the CPU to support SSE4.2, otherwise the Windows kernel is unbootable.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th scope="col">Instruction </th> <th scope="col">Description </th></tr> <tr> <td><code>CRC32</code> </td> <td>Accumulate <a href="/wiki/CRC32" class="mw-redirect" title="CRC32">CRC32</a>C value using the polynomial 0x11EDC6F41 (or, without the high order bit, 0x1EDC6F41).<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><code>PCMPESTRI</code> </td> <td>Packed Compare Explicit Length Strings, Return Index </td></tr> <tr> <td><code>PCMPESTRM</code> </td> <td>Packed Compare Explicit Length Strings, Return Mask </td></tr> <tr> <td><code>PCMPISTRI</code> </td> <td>Packed Compare Implicit Length Strings, Return Index </td></tr> <tr> <td><code>PCMPISTRM</code> </td> <td>Packed Compare Implicit Length Strings, Return Mask </td></tr> <tr> <td><code>PCMPGTQ</code> </td> <td>Compare Packed Signed 64-bit data For Greater Than </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="POPCNT_and_LZCNT"><code>POPCNT</code> and <code>LZCNT</code></h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=6" title="Edit section: POPCNT and LZCNT"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>These instructions operate on integer rather than SSE registers, because they are not SIMD instructions, but appear at the same time and although introduced by AMD with the SSE4a instruction set, they are counted as separate extensions with their own dedicated CPUID bits to indicate support. Intel implements <code>POPCNT</code> beginning with the <a href="/wiki/Nehalem_(microarchitecture)" title="Nehalem (microarchitecture)">Nehalem</a> microarchitecture and <code>LZCNT</code> beginning with the <a href="/wiki/Haswell_(microarchitecture)" title="Haswell (microarchitecture)">Haswell</a> microarchitecture. AMD implements both, beginning with the <a href="/wiki/AMD_K10#Characteristics_of_the_microarchitecture" class="mw-redirect" title="AMD K10">Barcelona microarchitecture</a>. </p><p>AMD calls this pair of instructions <a href="/wiki/Bit_Manipulation_Instruction_Sets" class="mw-redirect" title="Bit Manipulation Instruction Sets"><i>Advanced Bit Manipulation</i> (ABM)</a>. </p><p>The encoding of <code>LZCNT</code> takes the same encoding path as the encoding of the <code>BSR</code> (bit scan reverse) instruction. This results in an issue where <code>LZCNT</code> called on some CPUs not supporting it, such as Intel CPUs prior to Haswell, may incorrectly execute the <code>BSR</code> operation instead of raising an <i>invalid instruction</i> exception. This is an issue as the result values of <code>LZCNT</code> and <code>BSR</code> are different. </p><p>Trailing zeros can be counted using the <code>BSF</code> (bit scan forward) or <code>TZCNT</code> instructions. </p><p><a href="/wiki/Windows_11,_version_24H2" title="Windows 11, version 24H2">Windows 11 24H2</a> requires the CPU to support <code>POPCNT</code>, otherwise the Windows kernel is unbootable.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th scope="col">Instruction </th> <th scope="col">Description </th></tr> <tr> <td><code>POPCNT</code> </td> <td><a href="/wiki/Hamming_weight" title="Hamming weight">Population count</a> (count number of bits set to 1). Support is indicated via the CPUID.01H:ECX.POPCNT[Bit 23] flag.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><code>LZCNT</code> </td> <td><a href="/wiki/Leading_zero_count" class="mw-redirect" title="Leading zero count">Leading zero count</a>. Support is indicated via the CPUID.80000001H:ECX.ABM[Bit 5] flag.<sup id="cite_ref-amd_cpuid_17-0" class="reference"><a href="#cite_note-amd_cpuid-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="SSE4a">SSE4a</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=7" title="Edit section: SSE4a"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The SSE4a instruction group was introduced in AMD's <a href="/wiki/AMD_K10#Characteristics_of_the_microarchitecture" class="mw-redirect" title="AMD K10">Barcelona microarchitecture</a>. These instructions are not available in Intel processors. Support is indicated via the CPUID.80000001H:ECX.SSE4A[Bit 6] flag.<sup id="cite_ref-amd_cpuid_17-1" class="reference"><a href="#cite_note-amd_cpuid-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </p> <table class="wikitable"> <tbody><tr> <th scope="col">Instruction </th> <th scope="col">Description </th></tr> <tr> <td><code>EXTRQ</code>/<wbr /><code>INSERTQ</code> </td> <td>Combined mask-shift instructions.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><code>MOVNTSD</code>/<wbr /><code>MOVNTSS</code> </td> <td>Scalar streaming store instructions.<sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Supporting_CPUs">Supporting CPUs</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=8" title="Edit section: Supporting CPUs"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/X86-64#Microarchitecture_levels" title="X86-64">X86-64 v2</a> CPUs: </p> <ul><li><a href="/wiki/Intel_Corporation" class="mw-redirect" title="Intel Corporation">Intel</a> <ul><li><a href="/wiki/Silvermont_(microarchitecture)" class="mw-redirect" title="Silvermont (microarchitecture)">Silvermont</a> processors (SSE4.1, SSE4.2 and <code>POPCNT</code> supported)</li> <li><a href="/wiki/Goldmont" title="Goldmont">Goldmont</a> processors (SSE4.1, SSE4.2 and <code>POPCNT</code> supported)</li> <li><a href="/wiki/Goldmont_Plus" title="Goldmont Plus">Goldmont Plus</a> processors (SSE4.1, SSE4.2 and <code>POPCNT</code> supported)</li> <li><a href="/wiki/Tremont_(microarchitecture)" title="Tremont (microarchitecture)">Tremont</a> processors (SSE4.1, SSE4.2 and <code>POPCNT</code> supported)</li> <li><a href="/wiki/Penryn_(microarchitecture)" title="Penryn (microarchitecture)">Penryn</a> processors (SSE4.1 supported, except <a href="/wiki/Pentium_Dual-Core" title="Pentium Dual-Core">Pentium Dual-Core</a> and <a href="/wiki/Celeron" title="Celeron">Celeron</a>)</li> <li><a href="/wiki/Nehalem_(microarchitecture)" title="Nehalem (microarchitecture)">Nehalem</a> processors and <a href="/wiki/Westmere_(microarchitecture)" title="Westmere (microarchitecture)">Westmere</a> processors (SSE4.1, SSE4.2 and <code>POPCNT</code> supported, except <a href="/wiki/Pentium" title="Pentium">Pentium</a> and <a href="/wiki/Celeron" title="Celeron">Celeron</a>)</li> <li><a href="/wiki/Sandy_Bridge_(microarchitecture)" class="mw-redirect" title="Sandy Bridge (microarchitecture)">Sandy Bridge</a> processors and newer (SSE4.1, SSE4.2 and <code>POPCNT</code> supported, include <a href="/wiki/Pentium" title="Pentium">Pentium</a> and <a href="/wiki/Celeron" title="Celeron">Celeron</a>)</li> <li><a href="/wiki/Haswell_(microarchitecture)" title="Haswell (microarchitecture)">Haswell</a> processors and newer (SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li></ul></li> <li><a href="/wiki/Advanced_Micro_Devices" class="mw-redirect" title="Advanced Micro Devices">AMD</a> <ul><li><a href="/wiki/AMD_10h" title="AMD 10h">K10-based</a> processors (SSE4a, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li>"Cat" low-power processors <ul><li><a href="/wiki/Bobcat_(processor)" class="mw-redirect" title="Bobcat (processor)">Bobcat-based</a> processors (SSE4a, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Jaguar_(microarchitecture)" title="Jaguar (microarchitecture)">Jaguar-based</a> processors and newer (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Puma_(microarchitecture)" title="Puma (microarchitecture)">Puma-based</a> processors and newer (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li></ul></li> <li>"Heavy Equipment" processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported) <ul><li><a href="/wiki/Bulldozer_(microarchitecture)" title="Bulldozer (microarchitecture)">Bulldozer-based</a> processors</li> <li><a href="/wiki/Piledriver_(microarchitecture)" title="Piledriver (microarchitecture)">Piledriver-based</a> processors<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup></li> <li><a href="/wiki/Steamroller_(microarchitecture)" title="Steamroller (microarchitecture)">Steamroller-based</a> processors</li> <li><a href="/wiki/Excavator_(microarchitecture)" title="Excavator (microarchitecture)">Excavator-based</a> processors and newer</li></ul></li> <li><a href="/wiki/Zen_(microarchitecture)" title="Zen (microarchitecture)">Zen-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Zen%2B" title="Zen+">Zen+-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Zen_2" title="Zen 2">Zen2-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Zen_3" title="Zen 3">Zen3-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Zen_4" title="Zen 4">Zen4-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li> <li><a href="/wiki/Zen_5" title="Zen 5">Zen5-based</a> processors (SSE4a, SSE4.1, SSE4.2, <code>POPCNT</code> and <code>LZCNT</code> supported)</li></ul></li> <li><a href="/wiki/VIA_Technologies" title="VIA Technologies">VIA</a> <ul><li><a href="/wiki/VIA_Nano" title="VIA Nano">Nano</a> 3000, X2, QuadCore processors (SSE4.1 supported)</li> <li><a href="/wiki/VIA_Nano" title="VIA Nano">Nano</a> QuadCore C4000-series processors (SSE4.1, SSE4.2 supported)</li> <li><a href="/wiki/VIA_Eden" title="VIA Eden">Eden</a> X4 processors (SSE4.1, SSE4.2 supported)</li></ul></li> <li><a href="/wiki/Zhaoxin" title="Zhaoxin">Zhaoxin</a> <ul><li>ZX-C processors and newer (SSE4.1, SSE4.2 supported)</li></ul></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=9" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-:0-1"><span class="mw-cite-backlink">^ <a href="#cite_ref-:0_1-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-:0_1-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-:0_1-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.intel.com/technology/architecture-silicon/sse4-instructions/index.htm">Intel Streaming SIMD Extensions 4 (SSE4) Instruction Set Innovation</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090530090240/http://www.intel.com/technology/architecture-silicon/sse4-instructions/index.htm">Archived</a> May 30, 2009, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, Intel.</span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://intel.wingateweb.com/published/BMAS005/BMAS005_100Eng.pdf">Tuning for Intel SSE4 for the 45nm Next Generation Intel Core Microarchitecture</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20210308153939/https://intel.wingateweb.com/published/BMAS005/BMAS005_100Eng.pdf">Archived</a> March 8, 2021, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, Intel.</span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://software.intel.com/sites/default/files/m/8/b/8/D9156103.pdf">"Intel SSE4 Programming Reference"</a> <span class="cs1-format">(PDF)</span>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200215144900/https://software.intel.com/sites/default/files/m/8/b/8/D9156103.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on February 15, 2020<span class="reference-accessdate">. Retrieved <span class="nowrap">December 26,</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Intel+SSE4+Programming+Reference&rft_id=https%3A%2F%2Fsoftware.intel.com%2Fsites%2Fdefault%2Ffiles%2Fm%2F8%2Fb%2F8%2FD9156103.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://web.archive.org/web/20160809220231/http://developer.amd.com/community/blog/2008/04/14/barcelona-processor-feature-sse-misaligned-access/">"<span class="cs1-kern-left"></span>"Barcelona" Processor Feature: SSE Misaligned Access"</a>. AMD. Archived from <a rel="nofollow" class="external text" href="http://developer.amd.com/community/blog/2008/04/14/barcelona-processor-feature-sse-misaligned-access/">the original</a> on August 9, 2016<span class="reference-accessdate">. Retrieved <span class="nowrap">March 3,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%22Barcelona%22+Processor+Feature%3A+SSE+Misaligned+Access&rft.pub=AMD&rft_id=http%3A%2F%2Fdeveloper.amd.com%2Fcommunity%2Fblog%2F2008%2F04%2F14%2Fbarcelona-processor-feature-sse-misaligned-access%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.hardwaresecrets.com/article/Inside-Intel-Nehalem-Microarchitecture/535/7">"Inside Intel Nehalem Microarchitecture"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150402125657/http://www.hardwaresecrets.com/article/Inside-Intel-Nehalem-Microarchitecture/535/7">Archived</a> from the original on April 2, 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">March 3,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Inside+Intel+Nehalem+Microarchitecture&rft_id=http%3A%2F%2Fwww.hardwaresecrets.com%2Farticle%2FInside-Intel-Nehalem-Microarchitecture%2F535%2F7&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-sse4criticism-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-sse4criticism_6-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.dailytech.com/article.aspx?newsid=3348">My Experience With "Conroe"</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20131015110825/http://www.dailytech.com/article.aspx?newsid=3348">Archived</a> October 15, 2013, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, DailyTech</span> </li> <li id="cite_note-sse4newinstructions-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-sse4newinstructions_7-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="ftp://download.intel.com/technology/architecture/new-instructions-paper.pdf">Extending the World's Most Popular Processor Architecture</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20111124230720/http://download.intel.com/technology/architecture/new-instructions-paper.pdf">Archived</a> November 24, 2011, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, Intel</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.intel.com/technology/product/demos/hdb/demo.htm">"Intel - Data Center Solutions, IOT, and PC Innovation"</a>. <i>Intel</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130207023603/http://www.intel.com/technology/product/demos/hdb/demo.htm">Archived</a> from the original on February 7, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">September 17,</span> 2009</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Intel&rft.atitle=Intel+-+Data+Center+Solutions%2C+IOT%2C+and+PC+Innovation&rft_id=http%3A%2F%2Fwww.intel.com%2Ftechnology%2Fproduct%2Fdemos%2Fhdb%2Fdemo.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://software.intel.com/en-us/articles/motion-estimation-with-intel-streaming-simd-extensions-4-intel-sse4">Motion Estimation with Intel Streaming SIMD Extensions 4 (Intel SSE4)</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180616231328/https://software.intel.com/en-us/articles/motion-estimation-with-intel-streaming-simd-extensions-4-intel-sse4">Archived</a> June 16, 2018, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, Intel.</span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://software.intel.com/en-us/articles/schema-validation-with-intel-streaming-simd-extensions-4-intel-sse4/">"Schema Validation with Intel Streaming SIMD Extensions 4 (Intel SSE4)"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180617065748/https://software.intel.com/en-us/articles/schema-validation-with-intel-streaming-simd-extensions-4-intel-sse4/">Archived</a> from the original on June 17, 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">February 6,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Schema+Validation+with+Intel+Streaming+SIMD+Extensions+4+%28Intel+SSE4%29&rft_id=http%3A%2F%2Fsoftware.intel.com%2Fen-us%2Farticles%2Fschema-validation-with-intel-streaming-simd-extensions-4-intel-sse4%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://software.intel.com/en-us/articles/xml-parsing-accelerator-with-intel-streaming-simd-extensions-4-intel-sse4/">"XML Parsing Accelerator with Intel Streaming SIMD Extensions 4 (Intel SSE4)"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20180617042918/https://software.intel.com/en-us/articles/xml-parsing-accelerator-with-intel-streaming-simd-extensions-4-intel-sse4/">Archived</a> from the original on June 17, 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">February 6,</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=XML+Parsing+Accelerator+with+Intel+Streaming+SIMD+Extensions+4+%28Intel+SSE4%29&rft_id=http%3A%2F%2Fsoftware.intel.com%2Fen-us%2Farticles%2Fxml-parsing-accelerator-with-intel-streaming-simd-extensions-4-intel-sse4%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKlotz2024" class="citation web cs1">Klotz, Aaron (April 24, 2024). <a rel="nofollow" class="external text" href="https://www.tomshardware.com/software/windows/microsoft-updates-windows-11-24h2-requirements-cpu-must-support-sse42-or-the-os-will-not-boot">"Microsoft blocks some PCs from Windows 11 24H2 — CPU must support SSE4.2 or the OS will not boot"</a>. <i><a href="/wiki/Tom%27s_Hardware" title="Tom's Hardware">Tom's Hardware</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">April 29,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Tom%27s+Hardware&rft.atitle=Microsoft+blocks+some+PCs+from+Windows+11+24H2+%E2%80%94+CPU+must+support+SSE4.2+or+the+OS+will+not+boot&rft.date=2024-04-24&rft.aulast=Klotz&rft.aufirst=Aaron&rft_id=https%3A%2F%2Fwww.tomshardware.com%2Fsoftware%2Fwindows%2Fmicrosoft-updates-windows-11-24h2-requirements-cpu-must-support-sse42-or-the-os-will-not-boot&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://software.intel.com/sites/default/files/m/8/b/8/D9156103.pdf">Intel SSE4 Programming Reference</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20200215144900/https://software.intel.com/sites/default/files/m/8/b/8/D9156103.pdf">Archived</a> February 15, 2020, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> p. 61. See also <a rel="nofollow" class="external text" href="http://www.rfc-editor.org/rfc/rfc3385.txt">RFC 3385</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20080619055744/http://www.rfc-editor.org/rfc/rfc3385.txt">Archived</a> June 19, 2008, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a> for discussion of the CRC32C polynomial.</span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://drdobbs.com/cpp/229401411">Fast, Parallelized CRC Computation Using the Nehalem CRC32 Instruction</a> — Dr. Dobbs, April 12, 2011</span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSen2024" class="citation web cs1">Sen, Sayan (March 17, 2024). <a rel="nofollow" class="external text" href="https://www.neowin.net/news/microsoft-fixes-a-misfired-popcnt-block-but-windows-11-24h2-requirements-may-be-here-to-stay/">"Microsoft fixes a misfired PopCnt block but Windows 11 24H2 requirements may be here to stay"</a>. <i><a href="/wiki/Neowin" title="Neowin">Neowin</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">March 17,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Neowin&rft.atitle=Microsoft+fixes+a+misfired+PopCnt+block+but+Windows+11+24H2+requirements+may+be+here+to+stay&rft.date=2024-03-17&rft.aulast=Sen&rft.aufirst=Sayan&rft_id=https%3A%2F%2Fwww.neowin.net%2Fnews%2Fmicrosoft-fixes-a-misfired-popcnt-block-but-windows-11-24h2-requirements-may-be-here-to-stay%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.intel.com/products/processor/manuals/">Intel 64 and IA-32 Architectures Software Developer's Manual, Volume 2B: Instruction Set Reference, N–Z</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20110308235039/http://www.intel.com/products/processor/manuals/">Archived</a> March 8, 2011, at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>.</span> </li> <li id="cite_note-amd_cpuid-17"><span class="mw-cite-backlink">^ <a href="#cite_ref-amd_cpuid_17-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-amd_cpuid_17-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://developer.amd.com/wordpress/media/2012/10/254811.pdf">"AMD CPUID Specification"</a> <span class="cs1-format">(PDF)</span>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20131101223534/http://developer.amd.com/wordpress/media/2012/10/254811.pdf">Archived</a> <span class="cs1-format">(PDF)</span> from the original on November 1, 2013<span class="reference-accessdate">. Retrieved <span class="nowrap">October 30,</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=AMD+CPUID+Specification&rft_id=http%3A%2F%2Fdeveloper.amd.com%2Fwordpress%2Fmedia%2F2012%2F10%2F254811.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRahul_Chaturvedi2007" class="citation web cs1">Rahul Chaturvedi (September 17, 2007). <a rel="nofollow" class="external text" href="https://archive.today/20131025122939/http://developer.amd.com/community/blog/barcelona-processor-feature-sse4a-instruction-set/">"<span class="cs1-kern-left"></span>"Barcelona" Processor Feature: SSE4a Instruction Set"</a>. Archived from <a rel="nofollow" class="external text" href="http://developer.amd.com/community/blog/barcelona-processor-feature-sse4a-instruction-set/">the original</a> on October 25, 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%22Barcelona%22+Processor+Feature%3A+SSE4a+Instruction+Set&rft.date=2007-09-17&rft.au=Rahul+Chaturvedi&rft_id=http%3A%2F%2Fdeveloper.amd.com%2Fcommunity%2Fblog%2Fbarcelona-processor-feature-sse4a-instruction-set%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-19">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRahul_Chaturvedi2007" class="citation web cs1">Rahul Chaturvedi (October 2, 2007). <a rel="nofollow" class="external text" href="https://archive.today/20131025123127/http://developer.amd.com/community/blog/barcelona-processor-feature-sse4a-part-2/">"<span class="cs1-kern-left"></span>"Barcelona" Processor Feature: SSE4a, part 2"</a>. Archived from <a rel="nofollow" class="external text" href="http://developer.amd.com/community/blog/barcelona-processor-feature-sse4a-part-2/">the original</a> on October 25, 2013.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=%22Barcelona%22+Processor+Feature%3A+SSE4a%2C+part+2&rft.date=2007-10-02&rft.au=Rahul+Chaturvedi&rft_id=http%3A%2F%2Fdeveloper.amd.com%2Fcommunity%2Fblog%2Fbarcelona-processor-feature-sse4a-part-2%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.cpu-world.com/CPUs/Bulldozer/AMD-FX-Series%20FX-6300.html">"AMD FX-Series FX-6300 - FD6300WMW6KHK / FD6300WMHKBOX"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170817163057/http://www.cpu-world.com/CPUs/Bulldozer/AMD-FX-Series%20FX-6300.html">Archived</a> from the original on August 17, 2017<span class="reference-accessdate">. Retrieved <span class="nowrap">October 9,</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=AMD+FX-Series+FX-6300+-+FD6300WMW6KHK+%2F+FD6300WMHKBOX&rft_id=http%3A%2F%2Fwww.cpu-world.com%2FCPUs%2FBulldozer%2FAMD-FX-Series%2520FX-6300.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ASSE4" class="Z3988"></span></span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=SSE4&action=edit&section=10" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a rel="nofollow" class="external text" href="https://www.intel.com/content/dam/develop/external/us/en/documents/d9156103-705230.pdf">SSE4 Programming Reference</a> by Intel</li> <li><a rel="nofollow" class="external text" href="http://halobates.de/pcmpstr-js/pcmp.html">PCMPSTR calculator for the SSE 4.2 string instructions</a> archived at <a rel="nofollow" class="external text" href="https://ghostarchive.org/archive/qQEXl?kreymer=true">Ghostarchive.org</a> at May 10, 2022</li></ul> <p class="mw-empty-elt"> </p> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul ol,.mw-parser-output .hlist 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style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini 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title="Special:EditPage/Template:Multimedia extensions"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Instruction_set_extensions480" style="font-size:114%;margin:0 4em"><a href="/wiki/Instruction_set" class="mw-redirect" title="Instruction set">Instruction set</a> <a href="/wiki/Processor_supplementary_capability" title="Processor supplementary capability">extensions</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Single_instruction,_multiple_data" title="Single instruction, multiple data">SIMD</a> (<a href="/wiki/Reduced_instruction_set_computer" title="Reduced instruction set computer">RISC</a>)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/DEC_Alpha" title="DEC Alpha">Alpha</a> <ul><li><a href="/wiki/DEC_Alpha#Motion_Video_Instructions_(MVI)" title="DEC Alpha">MVI</a></li></ul></li> <li><a href="/wiki/ARM_architecture_family" title="ARM architecture family">ARM</a> <ul><li><a href="/wiki/ARM_architecture_family#Advanced_SIMD_(Neon)" title="ARM architecture family">NEON</a></li> <li><a href="/wiki/AArch64#Scalable_Vector_Extension_(SVE)" title="AArch64">SVE</a></li></ul></li> <li><a href="/wiki/MIPS_architecture" title="MIPS architecture">MIPS</a> <ul><li><a href="/wiki/MDMX" title="MDMX">MDMX</a></li> <li><a href="/wiki/MIPS-3D" title="MIPS-3D">MIPS-3D</a></li> <li><a href="/wiki/Media_Extension_Unit" class="mw-redirect" title="Media Extension Unit">MXU</a></li> <li><a href="/wiki/MIPS_architecture#MIPS_SIMD_architecture" title="MIPS architecture">MIPS SIMD</a></li></ul></li> <li><a href="/wiki/PA-RISC" title="PA-RISC">PA-RISC</a> <ul><li><a href="/wiki/Multimedia_Acceleration_eXtensions" title="Multimedia Acceleration eXtensions">MAX</a></li></ul></li> <li><a href="/wiki/Power_ISA" title="Power ISA">Power ISA</a> <ul><li><a href="/wiki/AltiVec" title="AltiVec">VMX</a></li></ul></li> <li><a href="/wiki/SPARC" title="SPARC">SPARC</a> <ul><li><a href="/wiki/Visual_Instruction_Set" title="Visual Instruction Set">VIS</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Single_instruction,_multiple_data" title="Single instruction, multiple data">SIMD</a> (<a href="/wiki/X86" title="X86">x86</a>)</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/MMX_(instruction_set)" title="MMX (instruction set)">MMX</a> (1996)</li> <li><a href="/wiki/3DNow!" title="3DNow!">3DNow!</a> (1998)</li> <li><a href="/wiki/Streaming_SIMD_Extensions" title="Streaming SIMD Extensions">SSE</a> (1999)</li> <li><a href="/wiki/SSE2" title="SSE2">SSE2</a> (2001)</li> <li><a href="/wiki/SSE3" title="SSE3">SSE3</a> (2004)</li> <li><a href="/wiki/SSSE3" title="SSSE3">SSSE3</a> (2006)</li> <li><a class="mw-selflink selflink">SSE4</a> (2006)</li> <li><a href="/wiki/SSE5" title="SSE5">SSE5</a> <s>(2007)</s></li> <li><a href="/wiki/Advanced_Vector_Extensions" title="Advanced Vector Extensions">AVX</a> (2008)</li> <li><a href="/wiki/F16C" title="F16C">F16C</a> (2009)</li> <li><a href="/wiki/XOP_instruction_set" title="XOP instruction set">XOP</a> (2009)</li> <li><a href="/wiki/FMA_instruction_set" title="FMA instruction set">FMA</a> (FMA4: 2011, FMA3: 2012)</li> <li><a href="/wiki/AVX2" class="mw-redirect" title="AVX2">AVX2</a> (2013)</li> <li><a href="/wiki/AVX-512" title="AVX-512">AVX-512</a> (2015)</li> <li><a href="/wiki/Advanced_Matrix_Extensions" title="Advanced Matrix Extensions">AMX</a> (2022)</li> <li><a href="/wiki/AVX10" class="mw-redirect" title="AVX10">AVX10</a> (2023)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Bit_manipulation" title="Bit manipulation">Bit manipulation</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bit_Manipulation_Instruction_Sets" class="mw-redirect" title="Bit Manipulation Instruction Sets">BMI</a> (ABM: 2007, BMI1: 2012, BMI2: 2013, TBM: 2012)</li> <li><a href="/wiki/Intel_ADX" title="Intel ADX">ADX</a> (2014)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Instruction_set_architecture#Code_density" title="Instruction set architecture">Compressed instructions</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ARM_architecture_family#Thumb" title="ARM architecture family">Thumb</a></li> <li><a href="/wiki/MIPS_architecture" title="MIPS architecture">MIPS16e ASE</a></li> <li><a href="/wiki/RISC-V#Compressed_subset" title="RISC-V">RVC</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Security and <a href="/wiki/Cryptographic_accelerator" title="Cryptographic accelerator">cryptography</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/VIA_PadLock" title="VIA PadLock">PadLock</a> (2003)</li> <li><a href="/wiki/AES_instruction_set" title="AES instruction set">AES-NI</a> (2008); ARMv8 also has AES instructions</li> <li><a href="/wiki/CLMUL_instruction_set" title="CLMUL instruction set">CLMUL</a> (2010)</li> <li><a href="/wiki/RDRAND" title="RDRAND">RDRAND</a> (2012)</li> <li><a href="/wiki/Intel_SHA_extensions" title="Intel SHA extensions">SHA</a> (2013)</li> <li><a href="/wiki/Intel_MPX" title="Intel MPX">MPX</a> (2015)</li> <li><a href="/wiki/Software_Guard_Extensions" title="Software Guard Extensions">SGX</a> (2015)</li> <li><a href="/wiki/Trust_Domain_Extensions" title="Trust Domain Extensions">TDX</a> (2021)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Transactional_memory" title="Transactional memory">Transactional memory</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Transactional_Synchronization_Extensions" title="Transactional Synchronization Extensions">TSX</a> (2013)</li> <li><a href="/wiki/Advanced_Synchronization_Facility" title="Advanced Synchronization Facility">ASF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hardware-assisted_virtualization" class="mw-redirect" title="Hardware-assisted virtualization">Virtualization</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/X86_virtualization#Intel_virtualization_(VT-x)" title="X86 virtualization">VT-x</a> (2005)</li> <li><a href="/wiki/X86_virtualization#AMD_virtualization_(AMD-V)" title="X86 virtualization">AMD-V</a> (2006)</li> <li><a href="/wiki/X86_virtualization#I/O_MMU_virtualization_(AMD-Vi_and_Intel_VT-d)" title="X86 virtualization">VT-d</a> (AMD-Vi)</li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div>Suspended extensions' dates are <s>struck through</s>.</div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?useformat=desktop&type=1x1&usesul3=0" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=SSE4&oldid=1274261508#SSE4.2">https://en.wikipedia.org/w/index.php?title=SSE4&oldid=1274261508#SSE4.2</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a 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