ʵϣƾ輫͵רɣ1%-2%ARM̬ʹڶ೧ΧARMԣARMƶļȫͼ
֪ʮǰӢضƾXscaleгWindowsMibileֻռҪλãǵ2006ڷչ˳IntelXscaleҵʱIntelûʶֻǺεȵĻԻ͡
20066£ӢضµXscaleҵʱXscaleռԾǰXscale6Ԫļ۸۸Marvell˾
iPhoneֻƳAndroidЩֻķչٶ൱ˣļ꼸100%-300%ٶȡ
ARMijɹӢضʹѣӢضҲȥARMȨֻǵӹˡñȽŵDzȥAndroidֻһΪ̫ˣڼеı˵Ŀֻˡ
IntelҲûšԼX8620083·AtomMenlow45nm죬Ƶ2.0GHzҪӢضPoulsboоƬ飬ҪʹڵʱMIDƷĹĺӦ飬ϵʱƶIJ伸ûгʵϣǺܶϤAtomҲIntelĿ꣬ǵʼDZرĿǰijֺAtomϵ͵ܾûκˡ
2011ƽƻiPadķ۶ʼУIntelڷӦԵͬʱòӿAtomзƽZ670Ľ5WڣʾṩWindowsMeeGoAndroidϵͳ֧֡öоƬļ۸ֻ̫ʹWindowsXPijصԡصǶʽZ670ŻһЩг
ƻͬ˵ĻϣӢضIDF2011ȸսԺAndroidϵͳֲx86ƽ̨ھ5ӢضȷAndroidΪ̬Ľƶֳն˵·ߣMedfieldAtomоƬµIJҲӢض 5ֻSoCоƬ
2012112գCES2012ϣIntelƳx86ֻܹһоƬΪƶ豸졣ǴPenwellAtom Z2460
˳̵߳Atom Z2460ѿARM Cortex-A9˫оƬҲͬARMоƬ൱͡ζӢض״ƶֳնx86оƬоƬͬһϡ
Atom Z2460ı̱ʽģΪսx86ܹIJARMĴ˵ûܴܡңAtomоƬֻҲ̫Intel룬۸ĵ͡199~299ԪΧ֮ڡ
ѲܣȻӢضѾAndroidx86ֲֻܹǻDalvik棬ڲARMԭӦãԼռȫӦõ25%ĿǰûһĽӢضϢƿܻöƱ룬ʵʱARMԭתx86ƽ̨⽫ЧʽͣͬӲ£x86ִʽܻȽϳԿ
⣬Z2460Ѿʤ˫ARMĿǰCortex-A9£δCortex-A15иִƣִָҲҪԶA9ĿǰĺоƬѾڸ߶г̿Ŀǰx86ƷֻжгARMѸٹȵ22nmգʵ˫߳Medfieldڵ˵Medfieldļ۸ʵ̫ˡ
Atom Z2460ĿǰʵƷƣӢضPCľȣIntel insideıʶڵġ
ӢضԣAndroidƶгֻһˡǰƶ̬ȦҪɷյƻiOSŵĹȸAndroidԼ뿪ŵWindows PhoneɣԹȸAndroidӲӪΪǿ˰ͨǡNVIDIAڵĶARMоƬ̣Windows PhoneӪĿǰֻиͨӢضȻѾȸӪʵȽ⣬x86ֱܹʹùȸ跢Androidϵͳ뾭ӢضĵֲӢضоƬǿͨAndroidĴݸ̬
Ӣضͨȸĺ飬ӢضAndroidƷϱֳɫӲ̵ĺֻǸʱ⡣ӢضʵǰԼһ̬Ȧx86̬ȦͼӵдֳֵĴֱƷߡ
ʵϣĿǰӢضΣջARMWindows 8еٽĿǰARMоƬͷڳƳᱡʼDZԵARMȻӢضȥ귢ijϴIvy Bridgeںڵijг۸߸ϣӲʣĽ죬ӵиᱡʡҼ۸ͣûӽARM¾ЯԵIJ9Ӣ絽11ӢʼDZûѡˡ
Atom Z2460
Medfieldƽ̨֮ǰMoorestownԲ֮ͬǰMoorestownƽ̨˫оƬܹһӢضAtom Z600ϵдԼһƽ̨ƼǰӵCPUGPUģҪṩܣҪṩߵȹܣPCHȻMoorestownƽ̨ѾڹĿƷ治˫оƬƺARMϸߵĹʹƹܵơ
Atom Z2460˾Ĺģ飬ڴ32nmCPUġPowerVR SGX 540ͼκġ512KB桢ImgTecƵ/桢Ƶģ顢˫ͨLPDDR2ڴÿ֧ͨLPDDR2 800ڴ棬֧1GBȡӢضûнеĺĶƽڻϣDz˶ѵװķʽоƬƺ죬յõԼ62mm2IJƷȽ˫Cortex-A9Tegra 249mm2ԴһЩ˫Cortex-A9ࡣ
Atom Z2460ĺCPUGPUARMƽ̨CPUijĽٶȣӢضƶƽ̨һֱʹõAtomļûκθġĿǰAtom Z2460еĵCPUǼǰڵǿAtomں˼ܹûбʵǶ˫ƣӢض洦Ѿȫķƣ˳ִмܹPentium ProԺûгֹ˳ִеCPUARMеCortex-A8˳ִеļܹûƵ˷ͳԪֻӲɣںӵ16ˮߣARMձҪӵ24KB L1ݻ桢32KB L1ָԼ512KB L2档⣬Atom Z2460ڲּĴָеظƶ˳̼֧߳֡
Atom Z2460мɵCPUARM ӪCortex-A9ƣ绺ṹϣCortex-A9Ҳӵ32KB L1ݻ32KB L1ָ棻ָṹ߶˫ƣӵ뵥Ԫָ㡣棬Cortex-A9Լ˷ԪALUԪһAtom Z2460ͬCortex-A9Atom Z2460ûרŵFP㵥ԪҲûFP/SSEԪѹ֧SSEýָֻһVFPv3/NEONģڴһЩйظIJ
CPUܹAtom Z2460ARMCortex-A9ǿ̫࣬Cortex-A9ڴAtom Z2460㣬ڴͣCPUʲߣں̶ܴӰ˴ܷӡCortex-A15֮ܵõһ̶ȵĽAtom Z2460һȿռ䡣
ϴƷMoorestownһMedfieldеGPUҲPowe rVRͺPowe rVR SGX 535ɸPowerVR SGX 540GPU200MHz¾ӵ28MT/sʺͽӽ1000MP/sʣﵽ7.2GFLOPSAtom Z2460еGPUʵƵﵽ400MHzܻҪ200MHzͺſܶࣨӢض2000MP/sʺ40MT/sʣչӢضɳƺGPUƷΪGraphics Media AcceleratorҲ֪GMAԿ
Atom Z2460֧MPEG 4.2H.264WMVVC-1ȸֱʽӲ빦ܣŸ岻ʲô⡣ƵϣAtom Z2460֧12801024ֱʵƵHDMIӿڿ1080p/30fpsƵĿǰֳܶƶ豸ΪС岥ƽ̨ӲĻƵ豸ӢضҲһ֧֡
Atom Z2460C6ļ£еĺĺͻ涼ڹر״̬ܹĽӽ0WCPUյʼʱ˲份ѣǴ0ʼ100MHzΪһһƵֱ1.6GHzͨ״̬£CPUƵʲ1.3GHzֻ²1.6GHzĸλϡеx86ƶƽ̨Ƶ
Atom Z2460256KBijĻ棬ڴ״̬ʱϵͳʹáĿǰеڲܹͼУ256KBءδȷʶ
Atom Z2460һ֮ɫƳ̹աӢضMedfieldƽ̨ϲרΪ豸Ż32nm LPգ©ֻϴ1/10ӢضԼ̨繫Ӣض32nmӦų́28nm©ʷ洦ͬˮƽϡˣMedfieldϴMoorestownܹͬļ£Ҫô43%Ķ̬ģҪô37%ƵʣǷdzԵĽ
MedfieldƵ/ı
Ƶ 100MHz 600MHz 1.3GHz 1.6GHz
оƬ Լ50mW Լ175mW Լ500mW Լ750mW
ʹص״̬£ҲС1WҪ֪Atom Z2460ʱ䶼ᳬ1.3GHz500mWĹıֱijЩ˫ĵCortex-A9Ҫ㡣
ĺCortex-A9Լ˫Cortex-A15½MedfieldֽµѹӢضĿǰҪƽ̨⡣ΪARMϾRISCָIJƷMedfieldx86CISCָġΪһ㣬Ӣض˶תķ˵ǽARMԭִǰתx86ָдתڵײ㣬ûȫоκβ졣ӢضʾֶͨοԱ֤90%ӦóԡAndroid NDKѾʼṩx86ARMͬʱ֧֣δx86ļӦò⡣
ĵַ:http://www.cnonline.org/2012/article/11773.html