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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">Início</div> </a> </li> <li id="toc-Visão_geral" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Visão_geral"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Visão geral</span> </div> </a> <ul id="toc-Visão_geral-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Etimologia" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Etimologia"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Etimologia</span> </div> </a> <ul id="toc-Etimologia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Importância" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Importância"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Importância</span> </div> </a> <ul id="toc-Importância-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Desenvolvimentos_recentes" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Desenvolvimentos_recentes"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Desenvolvimentos recentes</span> </div> </a> <ul id="toc-Desenvolvimentos_recentes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Northbridge_e_overclock" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Northbridge_e_overclock"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Northbridge e overclock</span> </div> </a> <ul id="toc-Northbridge_e_overclock-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referências" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referências"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Referências</span> </div> </a> <ul id="toc-Referências-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ver_também" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ver_também"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Ver também</span> </div> </a> <ul id="toc-Ver_também-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ligações_externas" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ligações_externas"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Ligações externas</span> </div> </a> <ul id="toc-Ligações_externas-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Conteúdo" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Índice" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Alternar o índice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Alternar o índice</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Northbridge</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ir para um artigo noutra língua. Disponível em 27 línguas" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-27" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">27 línguas</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/NorthBridge" title="NorthBridge — catalão" lang="ca" hreflang="ca" data-title="NorthBridge" data-language-autonym="Català" data-language-local-name="catalão" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Northbridge" title="Northbridge — checo" lang="cs" hreflang="cs" data-title="Northbridge" data-language-autonym="Čeština" data-language-local-name="checo" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Northbridge" title="Northbridge — dinamarquês" lang="da" hreflang="da" data-title="Northbridge" data-language-autonym="Dansk" data-language-local-name="dinamarquês" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Northbridge" title="Northbridge — alemão" lang="de" hreflang="de" data-title="Northbridge" data-language-autonym="Deutsch" data-language-local-name="alemão" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/Northbridge" title="Northbridge — grego" lang="el" hreflang="el" data-title="Northbridge" data-language-autonym="Ελληνικά" data-language-local-name="grego" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Northbridge_(computing)" title="Northbridge (computing) — inglês" lang="en" hreflang="en" data-title="Northbridge (computing)" data-language-autonym="English" data-language-local-name="inglês" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Norda_ponto" title="Norda ponto — esperanto" lang="eo" hreflang="eo" data-title="Norda ponto" data-language-autonym="Esperanto" data-language-local-name="esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Puente_norte" title="Puente norte — espanhol" lang="es" hreflang="es" data-title="Puente norte" data-language-autonym="Español" data-language-local-name="espanhol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/P%C3%B5hjasild" title="Põhjasild — estónio" lang="et" hreflang="et" data-title="Põhjasild" data-language-autonym="Eesti" data-language-local-name="estónio" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D9%84_%D8%B4%D9%85%D8%A7%D9%84%DB%8C" title="پل شمالی — persa" lang="fa" hreflang="fa" data-title="پل شمالی" data-language-autonym="فارسی" data-language-local-name="persa" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Pohjoissilta" title="Pohjoissilta — finlandês" lang="fi" hreflang="fi" data-title="Pohjoissilta" data-language-autonym="Suomi" data-language-local-name="finlandês" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Northbridge" title="Northbridge — francês" lang="fr" hreflang="fr" data-title="Northbridge" data-language-autonym="Français" data-language-local-name="francês" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/%C3%89szaki_h%C3%ADd" title="Északi híd — húngaro" lang="hu" hreflang="hu" data-title="Északi híd" data-language-autonym="Magyar" data-language-local-name="húngaro" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Northbridge" title="Northbridge — italiano" lang="it" hreflang="it" data-title="Northbridge" data-language-autonym="Italiano" data-language-local-name="italiano" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%85%B8%EC%8A%A4%EB%B8%8C%EB%A6%AC%EC%A7%80" title="노스브리지 — coreano" lang="ko" hreflang="ko" data-title="노스브리지" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Jejambat_utara" title="Jejambat utara — malaio" lang="ms" hreflang="ms" data-title="Jejambat utara" data-language-autonym="Bahasa Melayu" data-language-local-name="malaio" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Northbridge" title="Northbridge — neerlandês" lang="nl" hreflang="nl" data-title="Northbridge" data-language-autonym="Nederlands" data-language-local-name="neerlandês" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Mostek_p%C3%B3%C5%82nocny" title="Mostek północny — polaco" lang="pl" hreflang="pl" data-title="Mostek północny" data-language-autonym="Polski" data-language-local-name="polaco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Northbridge" title="Northbridge — romeno" lang="ro" hreflang="ro" data-title="Northbridge" data-language-autonym="Română" data-language-local-name="romeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B5%D0%B2%D0%B5%D1%80%D0%BD%D1%8B%D0%B9_%D0%BC%D0%BE%D1%81%D1%82_(%D0%BA%D0%BE%D0%BC%D0%BF%D1%8C%D1%8E%D1%82%D0%B5%D1%80)" title="Северный мост (компьютер) — russo" lang="ru" hreflang="ru" data-title="Северный мост (компьютер)" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Northbridge" title="Northbridge — Simple English" lang="en-simple" hreflang="en-simple" data-title="Northbridge" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Northbridge" title="Northbridge — eslovaco" lang="sk" hreflang="sk" data-title="Northbridge" data-language-autonym="Slovenčina" data-language-local-name="eslovaco" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/Severni_most" title="Severni most — sérvio" lang="sr" hreflang="sr" data-title="Severni most" data-language-autonym="Српски / srpski" data-language-local-name="sérvio" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Nordbrygga" title="Nordbrygga — sueco" lang="sv" hreflang="sv" data-title="Nordbrygga" data-language-autonym="Svenska" data-language-local-name="sueco" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D1%96%D0%B2%D0%BD%D1%96%D1%87%D0%BD%D0%B8%D0%B9_%D0%BC%D1%96%D1%81%D1%82_(%D0%BA%D0%BE%D0%BC%D0%BF%27%D1%8E%D1%82%D0%B5%D1%80)" title="Північний міст (комп'ютер) — ucraniano" lang="uk" hreflang="uk" data-title="Північний міст (комп'ютер)" data-language-autonym="Українська" data-language-local-name="ucraniano" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Chip_c%E1%BA%A7u_b%E1%BA%AFc" title="Chip cầu bắc — vietnamita" lang="vi" hreflang="vi" data-title="Chip cầu bắc" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%8C%97%E6%A1%A5" title="北桥 — chinês" lang="zh" hreflang="zh" data-title="北桥" data-language-autonym="中文" data-language-local-name="chinês" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a 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.tmbox.mbox-small{clear:right;float:right;margin:4px 0 4px 1em;width:238px}}@media screen{html.skin-theme-clientpref-night .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-night .mw-parser-output .tmbox-speedy{background-color:#310402}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .tmbox{background-color:#2e2505}html.skin-theme-clientpref-os .mw-parser-output .tmbox-speedy{background-color:#310402}}body.skin--responsive .mw-parser-output table.tmbox img{max-width:none!important}</style><table class="box-Mais_notas plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div style="width:52px"><span typeof="mw:File"><a href="/wiki/Ficheiro:Question_book-new.svg" class="mw-file-description"><img alt="Esta página cita fontes, mas não cobrem todo o conteúdo" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></span></div></td><td class="mbox-text"><div class="mbox-text-span">Esta página <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Cite_as_fontes" title="Wikipédia:Livro de estilo/Cite as fontes">cita fontes</a>, mas que <b><a href="/wiki/Wikip%C3%A9dia:V" class="mw-redirect" title="Wikipédia:V">não cobrem</a> todo o conteúdo</b>.<span class="hide-when-compact"> Ajude a <a href="/wiki/Wikip%C3%A9dia:Livro_de_estilo/Refer%C3%AAncias_e_notas_de_rodap%C3%A9" title="Wikipédia:Livro de estilo/Referências e notas de rodapé">inserir referências</a> (<small><i>Encontre fontes:</i> <span class="plainlinks"><a rel="nofollow" class="external text" href="https://wikipedialibrary.wmflabs.org/">ABW</a>  •  <a rel="nofollow" class="external text" href="https://www.periodicos.capes.gov.br">CAPES</a>  •  <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&as_epq=Northbridge">Google</a> (<a rel="nofollow" class="external text" href="https://www.google.com/search?hl=pt&tbm=nws&q=Northbridge&oq=Northbridge">notícias</a> • <a rel="nofollow" class="external text" href="http://books.google.com/books?&as_brr=0&as_epq=Northbridge">livros</a> • <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?hl=pt&q=Northbridge">acadêmico</a>)</span></small>).</span> <small class="date-container"><i>(<span class="date">Setembro de 2013</span>)</i></small></div></td></tr></tbody></table> <figure typeof="mw:File/Thumb"><a href="/wiki/Ficheiro:Diagrama_placa-m%C3%A3e.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Diagrama_placa-m%C3%A3e.png/300px-Diagrama_placa-m%C3%A3e.png" decoding="async" width="300" height="450" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/c/cb/Diagrama_placa-m%C3%A3e.png 1.5x" data-file-width="400" data-file-height="600" /></a><figcaption>Um esquema <i>north/southbridge</i> numa placa-mãe típica.</figcaption></figure> <p>O <b>northbridge</b> (em <a href="/wiki/L%C3%ADngua_portuguesa" title="Língua portuguesa">português</a>: <span lang="pt"> <b>ponte norte</b></span>), também conhecido como <b>memory controller hub</b> (<b>MCH</b>) em sistemas <a href="/wiki/Intel" title="Intel">Intel</a> (AMD, VIA, SiS e outros geralmente usam <i>northbridge</i>), é tradicionalmente um dos dois <a href="/wiki/Chip" class="mw-redirect" title="Chip">chips</a> que constituem o <a href="/wiki/Chipset" title="Chipset">chipset</a> numa <a href="/wiki/Placa-m%C3%A3e" title="Placa-mãe">placa-mãe</a> de <a href="/wiki/IBM_PC_compat%C3%ADvel" title="IBM PC compatível">PC</a>, sendo o outro o <i><a href="/wiki/Southbridge" title="Southbridge">southbridge</a></i>. Separar o chipset em <i>northbridge</i> e <i>southbridge</i> é comum, embora existam instâncias raras em que ambos são combinados num único <a href="/wiki/Die_(circuito_integrado)" title="Die (circuito integrado)">die</a> quando a complexidade do design e os processos de fabricação o permitem. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Visão_geral"><span id="Vis.C3.A3o_geral"></span>Visão geral</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=1" title="Editar secção: Visão geral" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=1" title="Editar código-fonte da secção: Visão geral"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O northbridge geralmente lida com a comunicação entre a <a href="/wiki/Unidade_central_de_processamento" title="Unidade central de processamento">UCP</a>, <a href="/wiki/Mem%C3%B3ria_RAM" class="mw-redirect" title="Memória RAM">memória RAM</a>, <a href="/wiki/Accelerated_Graphics_Port" class="mw-redirect" title="Accelerated Graphics Port">AGP</a> ou <a href="/wiki/PCI_Express" title="PCI Express">PCI Express</a> e o <a href="/wiki/Southbridge" title="Southbridge">southbridge</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span>[</span>1<span>]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span>[</span>2<span>]</span></a></sup> Alguns northbridges também contém controladores de vídeo integrados, os quais também são conhecidos como <i>Graphics and Memory Controller Hub</i> (GMCH) em sistemas Intel. Visto que processadores e RAM diferentes exigem sinalizações diferentes, um northbridge tipicamente funcionará com somente uma ou duas classes de <a href="/wiki/Unidade_central_de_processamento" title="Unidade central de processamento">UCPs</a> e geralmente com apenas um tipo de RAM. Existem uns poucos chipsets que suportam dois tipos de RAM (geralmente eles estão disponíveis quando há uma mudança para um novo padrão). Por exemplo, o northbridge do chipset <a href="/wiki/NVIDIA" class="mw-redirect" title="NVIDIA">NVIDIA</a> nForce2 somente funcionará com processadores <a href="/wiki/Socket_A" class="mw-redirect" title="Socket A">Socket A</a> combinados com <a href="/wiki/DDR_SDRAM" title="DDR SDRAM">DDR SDRAM</a>, o chipset <a href="/wiki/Intel" title="Intel">Intel</a> i875 chipset somente funcionará com sistemas que usem processadores <a href="/wiki/Pentium_4" title="Pentium 4">Pentium 4</a> ou <a href="/wiki/Celeron" title="Celeron">Celeron</a> que tenham uma taxa de <a href="/wiki/Clock" class="mw-redirect" title="Clock">clock</a> maior que 1,3 GHz e que utilizem DDR SDRAM, e o chipset <a href="/wiki/Intel" title="Intel">Intel</a> i915g somente irá operar com o Intel <a href="/wiki/Pentium_4" title="Pentium 4">Pentium 4</a> e <a href="/wiki/Celeron" title="Celeron">Celeron</a>, mas que usem memória DDR ou <a href="/wiki/DDR2_SDRAM" title="DDR2 SDRAM">DDR2</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Etimologia">Etimologia</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=2" title="Editar secção: Etimologia" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=2" title="Editar código-fonte da secção: Etimologia"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/Ficheiro:Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg/300px-Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg" decoding="async" width="300" height="300" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg/450px-Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/ea/Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg/600px-Gigabyte_7VT600P-RZ_-_VIA_KT600-9953.jpg 2x" data-file-width="2685" data-file-height="2685" /></a><figcaption>Northbridge VIA KT600 (<a href="/wiki/Dissipador" class="mw-redirect" title="Dissipador">dissipador</a> removido)</figcaption></figure> <p>O nome <i>northbridge</i> deriva do desenho da <a href="/wiki/Arquitetura_de_computadores" title="Arquitetura de computadores">arquitetura</a> ao modo dum mapa. A UCP fica no topo do mapa, precisamente no norte, conectada ao <a href="/wiki/Chipset" title="Chipset">chipset</a> por uma ponte rápida (o northbridge), localizado ao norte dos outros dispositivos do sistema no layout. O northbridge então se conectaria ao restante do chipset através de uma ponte lenta (o southbridge), localizado ao sul dos outros dispositivos de sistema no layout. </p> <div class="mw-heading mw-heading2"><h2 id="Importância"><span id="Import.C3.A2ncia"></span>Importância</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=3" title="Editar secção: Importância" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=3" title="Editar código-fonte da secção: Importância"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O northbridge na <a href="/wiki/Placa-m%C3%A3e" title="Placa-mãe">placa-mãe</a> de um sistema particular é o fator principal na determinação da quantidade, freqüência e tipo de CPU e RAM que podem ser usados. Outros fatores como regulação de voltagem e número de conectores também desempenham um papel. Virtualmente, todos os chipsets em nível de consumidor suportam somente uma série de processador, com a quantidade máxima de <a href="/wiki/Mem%C3%B3ria_RAM" class="mw-redirect" title="Memória RAM">memória RAM</a> variando pelo tipo de processador e design da placa-mãe. Máquinas da era Pentium freqüentemente tinham uma limitação de 128 <a href="/wiki/MebiByte" title="MebiByte">MiB</a> de memória, enquanto a maioria das máquinas Pentium 4 possuem um limite de 4 <a href="/wiki/GiB" class="mw-redirect" title="GiB">GiB</a>. Desde o <a href="/wiki/Pentium_Pro" title="Pentium Pro">Pentium Pro</a>, a arquitetura Intel pode acomodar <a href="/wiki/Espa%C3%A7o_de_endere%C3%A7amento" title="Espaço de endereçamento">endereços físicos</a> maiores do que <a href="/wiki/32_bits" title="32 bits">32 bits</a>, tipicamente, 36 bits, os quais possibilitam endereçar até 64 <a href="/wiki/GiB" class="mw-redirect" title="GiB">GiB</a> (ver <a href="/wiki/Physical_Address_Extension" class="mw-redirect" title="Physical Address Extension">PAE</a>), embora placas-mãe que possam suportar tamanha quantidade de RAM sejam raras por conta de outros fatores (limitações do <a href="/wiki/Sistema_operacional" class="mw-redirect" title="Sistema operacional">sistema operacional</a> e dispêndio de RAM). </p><p>Um northbridge tipicamente só irá funcionar com um ou dois tipos de southbridge <a href="/wiki/ASIC" class="mw-redirect" title="ASIC">ASICs</a>; neste respeito, isto afeta algumas das outras características que um dado sistema pode ter ao limitar quais tecnologias estão disponíveis no seu parceiro southbridge. </p><p>O northbridge possui sua própria memória <i><a href="/wiki/Lookup_table" class="mw-redirect" title="Lookup table">lookup table</a></i> (<a href="/w/index.php?title=IOMMU&action=edit&redlink=1" class="new" title="IOMMU (página não existe)">IOMMU</a>), um mapa dos endereços e layout na memória principal. </p> <div class="mw-heading mw-heading2"><h2 id="Desenvolvimentos_recentes">Desenvolvimentos recentes</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=4" title="Editar secção: Desenvolvimentos recentes" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=4" title="Editar código-fonte da secção: Desenvolvimentos recentes"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O <a href="/w/index.php?title=Controlador_de_mem%C3%B3ria&action=edit&redlink=1" class="new" title="Controlador de memória (página não existe)">controlador de memória</a>, que lida com a comunicação entre a UCP e a RAM, foi movido para dentro do <a href="/wiki/Die_(circuito_integrado)" title="Die (circuito integrado)">die</a> do processador no <a href="/wiki/AMD64" title="AMD64">AMD64</a>. A <a href="/wiki/Intel_Corporation" class="mw-redirect" title="Intel Corporation">Intel</a> também integrou o controlador de memória no <i>die</i> do processador a partir dos processadores baseados em sua microarquitetura <a href="/wiki/Nehalem_(microarquitetura)" title="Nehalem (microarquitetura)">Nehalem</a>. </p><p>Um exemplo desta mudança é o chipset <a href="/wiki/NVIDIA" class="mw-redirect" title="NVIDIA">NVIDIA</a> <a href="/w/index.php?title=NForce3&action=edit&redlink=1" class="new" title="NForce3 (página não existe)">nForce3</a> para sistemas <a href="/wiki/AMD64" title="AMD64">AMD64</a> num único chip. Ele combina todas as características de um <a href="/wiki/Southbridge" title="Southbridge">southbridge</a> normal com uma porta <a href="/wiki/Accelerated_Graphics_Port" class="mw-redirect" title="Accelerated Graphics Port">AGP</a> e conecta-se diretamente com a UCP. Em placas <a href="/w/index.php?title=NForce4&action=edit&redlink=1" class="new" title="NForce4 (página não existe)">nForce4</a>, isto é denominado <i>MCP</i> (<a href="/w/index.php?title=Media_Communications_Processor&action=edit&redlink=1" class="new" title="Media Communications Processor (página não existe)">Media Communications Processor</a>). </p> <div class="mw-heading mw-heading2"><h2 id="Northbridge_e_overclock">Northbridge e overclock</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=5" title="Editar secção: Northbridge e overclock" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=5" title="Editar código-fonte da secção: Northbridge e overclock"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>O northbridge desempenha um papel de destaque no quanto um computador pode sofrer <i><a href="/wiki/Overclocking" title="Overclocking">overclocking</a></i>, visto que sua freqüência é usada como ponto de partida pela UCP para estabelecer sua própria freqüência operacional. Nas máquinas modernas, este chip tem se tornado crescentemente mais quente a medida em que os computadores tornam-se mais rápidos. Não é mais incomum que o northbridge tenha de usar um <a href="/wiki/Dissipador" class="mw-redirect" title="Dissipador">dissipador</a> ou mesmo algum tipo de <a href="/w/index.php?title=Sistemas_de_resfriamento_de_computador&action=edit&redlink=1" class="new" title="Sistemas de resfriamento de computador (página não existe)">sistema de refrigeração</a>. </p> <h2 id="Referências" style="cursor: help;" title="Esta seção foi configurada para não ser editável diretamente. Edite a página toda ou a seção anterior em vez disso."><span id="Refer.C3.AAncias"></span>Referências</h2> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.informit.com/articles/article.aspx?p=339936">InformIT: Motherboards & Core-Logic Chipsets: The Deep Stuff > What the North Bridge and South Bridge Do</a></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text">George Jones - Maximum PC 2005 Buyer's Guide - Prentice Hall PTR - <a href="/wiki/Especial:Fontes_de_livros/0768663121" class="internal mw-magiclink-isbn">ISBN 0768663121</a></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Ver_também"><span id="Ver_tamb.C3.A9m"></span>Ver também</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=6" title="Editar secção: Ver também" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=6" title="Editar código-fonte da secção: Ver também"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Barramento_frontal" title="Barramento frontal">Barramento frontal</a></li> <li><a href="/wiki/Chipset" title="Chipset">Chipset</a></li> <li><a href="/wiki/Placa-m%C3%A3e" title="Placa-mãe">Placa-mãe</a></li> <li><a href="/wiki/Southbridge" title="Southbridge">Southbridge</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Ligações_externas"><span id="Liga.C3.A7.C3.B5es_externas"></span>Ligações externas</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Northbridge&veaction=edit&section=7" title="Editar secção: Ligações externas" class="mw-editsection-visualeditor"><span>editar</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Northbridge&action=edit&section=7" title="Editar código-fonte da secção: Ligações externas"><span>editar código-fonte</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>ALVES, Abel. <a rel="nofollow" class="external text" href="http://www.euseiescrever.com.br/coluna.php?b=131672">Anatomia de uma placa-mãe - Parte 1</a><sup><a href="/wiki/Wikip%C3%A9dia:Liga%C3%A7%C3%A3o_inativa" title="Wikipédia:Ligação inativa"><i>[ligação inativa]</i></a></sup>, <a href="/wiki/6_de_outubro" title="6 de outubro">6 de outubro</a> de <a href="/wiki/2005" title="2005">2005</a>. Acessado em <a href="/wiki/14_de_junho" title="14 de junho">14 de junho</a> de <a href="/wiki/2008" title="2008">2008</a>.</li> <li><a href="/wiki/B._Piropo" title="B. Piropo">DA-RIN, B. Piropo</a>. <i><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080519130012/http://www.forumpcs.com.br/coluna.php?b=141948">Computadores XVII: Placas-mãe e memória principal</a></i>, <a href="/wiki/19_de_dezembro" title="19 de dezembro">19 de dezembro</a> de <a href="/wiki/2005" title="2005">2005</a>. Acessado em <a href="/wiki/14_de_junho" title="14 de junho">14 de junho</a> de <a href="/wiki/2008" title="2008">2008</a>.</li></ul>    </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="">Obtida de "<a dir="ltr" href="https://pt.wikipedia.org/w/index.php?title=Northbridge&oldid=69524999">https://pt.wikipedia.org/w/index.php?title=Northbridge&oldid=69524999</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Especial:Categorias" title="Especial:Categorias">Categorias</a>: <ul><li><a href="/wiki/Categoria:IBM_PC_compat%C3%ADveis" title="Categoria:IBM PC compatíveis">IBM PC compatíveis</a></li><li><a href="/wiki/Categoria:Placas-m%C3%A3e" title="Categoria:Placas-mãe">Placas-mãe</a></li></ul></div><div id="mw-hidden-catlinks" class="mw-hidden-catlinks mw-hidden-cats-hidden">Categorias ocultas: <ul><li><a href="/wiki/Categoria:!P%C3%A1ginas_que_usam_hiperliga%C3%A7%C3%B5es_m%C3%A1gicas_ISBN" title="Categoria:!Páginas que usam hiperligações mágicas ISBN">!Páginas que usam hiperligações mágicas ISBN</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_desde_setembro_de_2013" title="Categoria:!Artigos que carecem de notas de rodapé desde setembro de 2013">!Artigos que carecem de notas de rodapé desde setembro de 2013</a></li><li><a href="/wiki/Categoria:!Artigos_que_carecem_de_notas_de_rodap%C3%A9_sem_indica%C3%A7%C3%A3o_de_tema" title="Categoria:!Artigos que carecem de notas de rodapé sem indicação de tema">!Artigos que carecem de notas de rodapé sem indicação de tema</a></li><li><a href="/wiki/Categoria:!Artigos_com_liga%C3%A7%C3%B5es_inativas" title="Categoria:!Artigos com ligações inativas">!Artigos com ligações inativas</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Esta página foi editada pela última vez às 16h26min de 8 de fevereiro de 2025.</li> <li id="footer-info-copyright">Este texto é disponibilizado nos termos da licença <a rel="nofollow" class="external text" href="https://creativecommons.org/licenses/by-sa/4.0/deed.pt">Atribuição-CompartilhaIgual 4.0 Internacional (CC BY-SA 4.0) da Creative Commons</a>; pode estar sujeito a condições adicionais. 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cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-talk-sticky-header" tabindex="-1" data-event-name="talk-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbles mw-ui-icon-wikimedia-speechBubbles"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-subject-sticky-header" tabindex="-1" data-event-name="subject-sticky-header"><span class="vector-icon mw-ui-icon-article mw-ui-icon-wikimedia-article"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-history-sticky-header" tabindex="-1" data-event-name="history-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-history mw-ui-icon-wikimedia-wikimedia-history"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only mw-watchlink" id="ca-watchstar-sticky-header" tabindex="-1" data-event-name="watch-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-star mw-ui-icon-wikimedia-wikimedia-star"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-ve-edit-sticky-header" tabindex="-1" data-event-name="ve-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-edit mw-ui-icon-wikimedia-wikimedia-edit"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-edit-sticky-header" tabindex="-1" data-event-name="wikitext-edit-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-wikiText mw-ui-icon-wikimedia-wikimedia-wikiText"></span> <span></span> </a> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only" id="ca-viewsource-sticky-header" tabindex="-1" data-event-name="ve-edit-protected-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-editLock mw-ui-icon-wikimedia-wikimedia-editLock"></span> <span></span> </a> </div> <div class="vector-sticky-header-buttons"> <button class="cdx-button cdx-button--weight-quiet mw-interlanguage-selector" id="p-lang-btn-sticky-header" tabindex="-1" data-event-name="ui.dropdown-p-lang-btn-sticky-header"><span class="vector-icon mw-ui-icon-wikimedia-language mw-ui-icon-wikimedia-wikimedia-language"></span> <span>27 línguas</span> </button> <a href="#" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive" id="ca-addsection-sticky-header" tabindex="-1" data-event-name="addsection-sticky-header"><span class="vector-icon mw-ui-icon-speechBubbleAdd-progressive mw-ui-icon-wikimedia-speechBubbleAdd-progressive"></span> <span>Adicionar tópico</span> </a> </div> <div class="vector-sticky-header-icon-end"> <div class="vector-user-links"> </div> </div> </div> </div> </div> <div class="mw-portlet mw-portlet-dock-bottom emptyPortlet" id="p-dock-bottom"> <ul> </ul> </div> <script>(RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgHostname":"mw-web.codfw.main-5d5f45b5c6-8vwp4","wgBackendResponseTime":130,"wgPageParseReport":{"limitreport":{"cputime":"0.220","walltime":"0.264","ppvisitednodes":{"value":945,"limit":1000000},"postexpandincludesize":{"value":9500,"limit":2097152},"templateargumentsize":{"value":170,"limit":2097152},"expansiondepth":{"value":11,"limit":100},"expensivefunctioncount":{"value":2,"limit":500},"unstrip-depth":{"value":0,"limit":20},"unstrip-size":{"value":10281,"limit":5000000},"entityaccesscount":{"value":0,"limit":400},"timingprofile":["100.00% 214.468 1 -total"," 73.29% 157.177 1 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