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<span style="float:right; width:130px;margin-right:0px; text-align:right;"> <div id="vl3rhv1" class="nav0"> <ul> <li><a href="javascript:void(0);"><img src="http://www.ex-cimer.com/event/action/images/icon_add_4.png" width="20" border="0" align="absmiddle" />加入技術交流群</a> <ul> <li style="text-align:center;"><img src="http://www.ex-cimer.com/event/company/images/code_1.jpg" width="130"><br />掃碼加入<br />和技術大咖面對面交流<br />海量資料庫查詢</li> </ul> </li> </ul> </div> </span> <span style="float:right; width:30px;margin-right:0px; text-align:right;"><a rel="nofollow">收藏</a></span> </div> <div id="bdrnbzb" class="hAd4_Afinal20a_back">  <iframe id='a890e388' name='a890e388' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='660' height='60'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=88&cb=INSERT_RANDOM_NUMBER_HERE&n=a635e61e' border='0' alt='' /></a></iframe> </div> <div style="margin-top:28px;"></div> <div id="n7ljvn1" class="content" id="contentDiv" style="position:relative;"> <div id="bzhdpll" class="editorNote"> <strong>編者按</strong>：現(xiàn)在國家宏觀的政策扶持導向還是偏向于各種合資/合作企業(yè)。在大方向上一些人還是對合資充滿幻想，對自主技術抱著懷疑的態(tài)度。</div> <br/> <div id="hbjhj1x" class="ad_300x180_Afinal13_back">  <iframe id='a225770a' name='a225770a' src='https://ad.eepw.com.cn/www/delivery/afr.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE' frameborder='0' scrolling='no' width='300' height='200'><a target='_blank'><img src='https://ad.eepw.com.cn/www/delivery/avw.php?zoneid=87&cb=INSERT_RANDOM_NUMBER_HERE&n=a576c0a2' border='0' alt='' /></a></iframe> </div> <span id="contentlabels" style="font-size:14px;"><p><strong>　　自主<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/CPU"><em>CPU</em></a>發(fā)展情況</strong></p>本文引用地址：<a href="http://www.ex-cimer.com/article/201706/359897.htm">http://www.ex-cimer.com/article/201706/359897.htm</a><p>　　<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/龍芯"><em>龍芯</em></a>、申威、飛騰是國內(nèi)自主<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/CPU"><em>CPU</em></a>方面的老玩家，目前三家單位/公司最好的桌面<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/CPU"><em>CPU</em></a>是<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/龍芯"><em>龍芯</em></a>3A3000、申威421和飛騰1500A。</p><p><br /></p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/90891496273427.jpg" width="360" height="215" /></center><p>　　飛騰1500A其實是一款相對早一些的CPU，拿來與問世遲一些的<a class="contentlabel" href="http://www.ex-cimer.com/news/listbylabel/label/龍芯"><em>龍芯</em></a>3A3000與申威421相比其實并不算很公平。不過目前飛騰最新的四核桌面CPU只有這一款，也只能這樣了。</p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/18401496273427.jpg" width="600" height="359" /></center><p><br /></p><p>　　FT1500A雖然相對早一些，但性能并不落后。就性能上來說，三款CPU大致處于同一個水平，與Intel和AMD都有不小的差距。如果從“矮個里拔高個”方面考慮，申威421是三款CPU中最強的。</p><p>　　申威的最大優(yōu)勢是申威26010的性能得道了全世界的肯定，這使申威的芯片有希望在正在研發(fā)的1000P超算上使用，進而在國家工程的保障下，申威可以進一步發(fā)展其CPU。</p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/57321496273427.jpg" width="400" height="266" /></center><p>　　對于申威來說，最大的不足是自主定義指令集，再次強調(diào)一下，現(xiàn)在的申威指令集和微結構都是自己做的，和當年的Alpha已經(jīng)沒有多大聯(lián)系了。不要用掛了十多年的DEC給申威找“爹”。</p><p>　　自主指令集也帶來一個問題——軟件生態(tài)問題非常嚴重，至少在相當一段時間內(nèi)，申威的桌面CPU只能在一些特殊場合，跑一些特定任務。</p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/69431496273427.jpg" width="400" height="300" /></center><p>　　飛騰和申威的主要發(fā)展方向是超算，而且由于申威421和飛騰1500A的性能已經(jīng)能滿足黨政軍，這樣就使飛騰和申威沒有太多動力去提示單核性能，加上1000P超算的國家工程，會分散大部分人力、財力和精力。因此，飛騰和申威極有可能在單線程性能提升的速度會放緩，主要精力服務于1000P超算的研發(fā)。</p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/9011496273428.jpg" width="500" height="375" /></center><p>　　龍芯由于已經(jīng)放棄了超算芯片研發(fā)。加上已經(jīng)是民營企業(yè)，要自負盈虧，到2020年前主要精力會放在工控和各種行業(yè)嵌入式芯片方面，主要目的是找細分市場，養(yǎng)活自己。</p><p>　　同時，為了更好的服務黨政軍市場，以及將來有可能的民用PC市場，龍芯對提升單核性能非常執(zhí)著。而且從目前的仿真結果來看成績比較不錯。</p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/48821496273428.jpg" width="640" height="426" /></center><p>　　不過，由于龍芯人少錢少，加上3A4000研發(fā)難度非常大，且計劃是同主頻下性能提升30-40%，同時，主頻還要提升30%。而且還是在制造工藝不變的情況下，這樣就非常考驗設計能力，因而3A4000會比較遲。可能會要2018年底或者2019年上半年才會有樣片。</p><p><strong>　　中國CPU發(fā)展不起來的關鍵在于買辦當?shù)?/strong></p><p><br /></p><center><img alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? src="http://editerupload.eepw.com.cn/201706/74001496273428.jpg" width="360" height="201" /></center><p>　　自主CPU得到的支持是非常有限的。舉例來說，兆芯的ZXC其實就是VIA/美國半人馬的設計重新去臺積電流片，然后ZXC變成國家“十二五”核高基重大科技專項創(chuàng)新成果。ZXD根據(jù)目前的信息看，其實是基于ZX-C的改版，做的SoC設計，集成了內(nèi)存控制器，pcie控制器等，二級cache變大。而ZXD這款芯片也是得到核高基的支持的。</p><center><img style="width:500px;height:276px" border="0" hspace="0" alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? vspace="0" src="http://editerupload.eepw.com.cn/201706/35491496273428.jpg" width="500" height="276" /></center><p><br /></p><p>　　自2013年合資以來，兆芯基本上是VIA的以賽亞穿馬甲的情況下，沒有多少原創(chuàng)性技術創(chuàng)新，結果在2017年又從核高基拿了一大筆錢......</p><p>　　像龍芯3A3000和龍芯2K1000，是龍芯用自己錢研發(fā)的，沒拿國家一分錢。這個在有官方背景的IC設計公司中是獨一無二的。</p><center><img style="width:500px;height:249px" border="0" hspace="0" alt="中國CPU發(fā)展不起來緣于買辦當?shù)溃? vspace="0" src="http://editerupload.eepw.com.cn/201706/11461496273428.jpg" width="500" height="249" /></center></span>  <div class="z1jrnzf" id="coverDiv" class="article_reg" style="width:100%;overflow:hidden;display:none;z-index:10;position:absolute;left:0;background:#fff;"> <center> <img src="https://webstorage.eepw.com.cn/images/display/reg.jpg" border="0" usemap="#Map" /> <map name="Map" id="Map"> <area shape="rect" coords="133,235,319,253" target="_blank" /> <area shape="rect" coords="132,315,319,335" /> </map> </center> </div>  <span id="1frbbv1" class="hAd8"> 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