2018年6月英语四级阅读200篇第126篇：64位大帝登基思维导图

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2018年6月英语四级阅读200篇第126篇：64位大帝登基思维导图

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　　64-Bit Takes Off 　　64-bit desktop computing has taken a significant step toward becoming a pervasive reality:AMD's ( Advanced Micro Devices ) release of its Athlon 64 chips — a

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64-BitTakesOff

64-bitdesktopcomputinghastakenasignificantsteptowardbecomingapervasivereality:AMD's(AdvancedMicroDevices)releaseofitsAthlon64chips—andApple'slaunchofitsG5CPUs—means64-bitprocessors,oncereservedforserversandhigh-endworkstations,arenowinPCsavailableonretailshelves.

Intime,64-bitPCscouldchangethefaceofdesktopcomputing.A64-bitchipcanrunlonger,morecomplexinstructionsthana32-bitone,improvingperformanceofdataintensivetaskssuchasaudioandvideoencoding,advancedengineeringdesignapps1,and,naturally,games.

Equallykeyisa64-bitCPU'sabilitytorecognizeandusealotmoreRAM2.Today's32-bitchips,suchasAMD'sAthlonXPandIntel'sPentium4,canaddressupto4GBofRAMsplitbetweentheOSandapplications.FewPCshavethatmuchmemory,andevenfewerappsuseit.Butwithever-more-complexsoftware,thatlimitationmaybecomeabottleneck,makingAthlon64'sabilitytoaddressawhoppingterabyte(1000GB)3ofphysicalmemoryveryattractive.

WhyisAMDpushingthe64-bitangleatall?Becausecompanyexecutivesbelievethe64-bitdesktopageisdawningnow."Oncevideoeditorswatcha64-bitPCencodevideodirectlytoaDVDonthefly,they'llwantone,"saysRichHeye,vicepresidentofAMD'smicroprocessorunit.Andoncegamersseethecinematicqualitythat64-bitchipshelpmakepossible,they'llwantone.Thoughmass-marketadoptionwilltakeafewyears,"theaveragelifetimeofaPCisthreetofouryears,andIthinkalotofpeoplewillberunning64bitsbeforethat'sup,"Heyesays.

ExecutivesatInteldisagree,seeing64-bitcomputingaslargelyaservertechnologyintheshortterm."Withjust5percentofserversusing64-bitaddressability,thereislittleneedtoday[for64bits]onthedesktop,"saysGeorgeAlfs,Intelspokesperson,addingthatwithoutsoftwareandothertoolstomakeitworkatitsbest,64bitsdoesn'tmeanmuch.

MicroDesignResources'sKrewellseesIntel'sresistanceto64bitsforthedesktopasamovetoprotectitssizeableinvestmentinits64-bitItaniumCPU,designedforserversandworkstations.

Meanwhile,withAthlon64,AMDhasreignitedthechipwars."That'salwaysgoodnewsforusers,"saysMDR'sKrewell.

练习题：

Ⅰ.Choosethewordwhichhasthesameorsimilarmeaningwiththeunderlinedword:

1.AMD'sreleaseofitsAthlon64chips

A.launchB.setfree

2.morecomplexinstructionsthana32-bitone

A.notsimpleB.notclever

3.Becausecompanyexecutivesbelieve

A.workersB.managers

4.toprotectitssizeableinvestment

A.roughB.huge

5.desktopageisdawningnow

A.returningB.coming

Ⅱ.Question:

Wherewere64-bitCPUsusedbefore?

答案：

Ⅰ.1.A2.A3.B4.B5.B

Ⅱ.serversandhigh-endworkstations

译文：

“64位大帝”登基

64位的台式电脑朝着普及迈出了重要的一步:超微的速龙64位处理器和苹果电脑的G5台式平台一起投放市场,这意味着曾经专为服务器和高端的工作站保留的64位处理器,现在也在零售货架上可以买到,用于装备个人电脑系统。

64位系统能够改变桌面计算的现状,因为64位的芯片能运行比32位的芯片更长、更复杂的指令,改良执行大运算量任务时的性能,例如音频和视频解码、高级工程设计应用程序,当然了,还包括电脑游戏。

同样重要的是64位处理器具有识别和使用更多内存的能力。今天的32位芯片,包括英特尔的奔4和超微的速龙XP,能够在操作系统和应用软件之间多达4GB的内存中寻址。拥有如此大内存的个人电脑很少,在应用程序方面能与之配敌的就更微乎其微了。但是目前以及将来使用更复杂的软件时,这种局限就成了瓶颈,这使得64位处理器能够寻址巨大的1TB内存的能力变得非常有吸引力。

超微到底为什么要推出64位?这是因为,公司的决策者们相信,64位台式机的时代已经来临了。“当电视图像