Apple A5X vs Nvidia Tegra 3 processors
Kab lus no piv ob qhov tsis ntev los no System-on-Chips (SoC), Apple A5X thiab NVIDIA Tegra 3, tsim los rau cov neeg siv khoom siv hluav taws xob los ntawm Apple thiab NVIDIA raws. Hauv Layperson lub sij hawm, SoC yog lub computer ntawm ib qho IC (Integrated Circuit, aka nti). Technically, SoC yog ib qho IC uas sib txuas cov khoom siv hauv lub computer (xws li microprocessor, nco, input / output) thiab lwm lub tshuab uas ua haujlwm rau hluav taws xob thiab xov tooj cua. Ob lub Apple A5X thiab NVIDIA Tegra3 yog Multiprocessor System-on-Chip (MPSoC), qhov twg tus tsim siv multiprocessor architecture rau kev siv lub tshuab xam zauv muaj. Thaum NVIDIA tso Tegra 3 thaum Lub Kaum Ib Hlis 2011, Apple yuav tso A5X nrog nws lub iPad 3 lub lim tiam no (Lub Peb Hlis 2012).
Feem ntau, cov khoom tseem ceeb ntawm SoC yog nws CPU (Central Processing Unit) thiab GPU (Graphics Processing Unit). Cov CPUs hauv Apple A5X thiab Tegra 3 yog raws li ARM's (Advanced RICS - Txo Cov Kev Qhia Teeb Meem Computer - Tshuab, tsim los ntawm ARM Holdings) v7 ISA (Instruction Set Architecture, ib qho uas yog siv los ua qhov chaw pib tsim lub processor).
NVIDIA Tegra 3 (Series)
NVIDIA, Ameslikas yog GPU (Graphics Processing Unit) lub tuam txhab tsim khoom [tau lees tias tau tsim GPUs hauv lub nineties lig] tau tsis ntev los no tau tsiv mus rau hauv kev lag luam txawb, qhov twg NVIDIA's System ntawm Chips (SoC) tau xa mus rau hauv xov tooj, ntsiav tshuaj thiab lwm yam khoom siv tes tuav. Tegra yog SoC series tsim los ntawm NVIDIA lub hom phiaj xa mus rau hauv kev ua lag luam txawb. Thawj MPSoC hauv Tegra 3 series tau tso tawm thaum lub Kaum Ib Hlis 2011 thiab tau pib ua ntej hauv ASUS Transformer Prime.
NVIDIA thov tias Tegra 3 yog thawj lub xov tooj ntawm tes super processor, thawj zaug muab quad core ARM Cotex-A9 architecture. Txawm hais tias Tegra3 muaj plaub (thiab yog li ntawd quad) ARM Cotex-A9 cores raws li nws lub ntsiab CPU, nws muaj ib qho auxiliary ARM Cotex-A9 core (lub npe hu ua tus khub tub ntxhais) uas zoo ib yam hauv architecture rau lwm tus, tab sis yog etched ntawm lub zog qis. ntaub thiab yog clocked ntawm ib tug tsawg zaus. Thaum lub cores tseem ceeb tuaj yeem ua haujlwm ntawm 1.3GHz (thaum tag nrho plaub lub cores ua haujlwm) mus rau 1.4GHz (thaum tsuas yog ib qho ntawm plaub cores ua haujlwm), cov tub ntxhais tseem ceeb yog clocked ntawm 500MHz. Lub hom phiaj ntawm lub auxiliary core yog khiav cov txheej txheem tom qab thaum lub cuab yeej nyob rau hauv standby hom thiab yog li txuag lub zog. GPU siv hauv Tegra3 yog NVIDIA's GeForce uas muaj 12 cores ntim rau hauv nws. Tegra 3 tso cai ntim txog li 2GB DDR2 RAM.
Apple A5X
Lub iPad tshiab (aka iPad 3 lossis iPad HD), thawj cov khoom siv hluav taws xob uas yuav nruab nrog A5X MPSoC yuav raug tso tawm nyob rau nruab nrab Lub Peb Hlis 2012 (thaum lub lim tiam no). Thaum lub sijhawm lub iPad tshiab tshaj tawm ntawm 7th Lub Peb Hlis 2012, Apple tau tshaj tawm tias lawv yuav siv Apple A5X processor los tsav lub cuab yeej. Kua A5X muaj dual core CPU zoo li A5 thiab yog li ntawd tsis mus ua qhov txawv heev piv rau nws yav dhau los A5 MPSoC. Nws yog ib qho tsim nyog yuav tsum nco ntsoov tias, qhov no yog qhov tsis txaus ntseeg rau yav dhau los kev ntseeg tias Apple yuav siv cov txheej txheem quad core, tus qauv ntawm 2012 MPSoCs (xws li Tegra 3), rau nws lub iPad tshiab. Raws li cov ntaub ntawv tawm mus txog tam sim no, Apple yuav teev nws A5X CPUs ntawm 1.2 GHz as opposed to 1GHz hauv nws cov thawj ntawm A5. Apple thov tias lawv A5X yuav muaj 4x kev ua tau zoo hauv cov duab piv rau cov khoom siv nruab nrog NVIDIA Tegra3.
Txawm hais tias A5X muaj dual core CPU, GPU siv (uas yog lub luag haujlwm rau cov duab ua haujlwm) yog plaub core PowerVR SGX543MP4. Yog li ntawd, cov duab ua tau zoo ntawm A5X yuav yog qhov kev xav tau ob npaug piv rau Apple A5 processor. Qhov tseeb, "X" hauv A5X sawv cev rau cov duab. Yog li ntawd, A5X yog ib tug high-end graphics processor uas yuav tsum tau txhawb lub tshiab iPad HD graphics (lub retina zaub uas Apple tab tom qhia nyob rau hauv lub tshiab iPad, thawj nyob rau hauv cov ntsiav tshuaj PCs). Nws yog ib qho tsim nyog sau cia tias rau qee qhov kev siv ntsuas ntsuas Apple A5 ua tau 2x zoo dua hauv cov duab piv rau Tegra3 thiab yog li ntawd Apple qhov kev thov ntawm 4x zoo dua cov duab ua tau zoo dua piv rau Tegra3 yog qhov ua tau. A5X yuav tsum tau xa nrog 32KB L1 ntiag tug cache nco ib core (rau cov ntaub ntawv thiab kev qhia cais) thiab 1MB sib koom L2 cache. Nws tseem yuav cia siab tias yuav tau ntim nrog 512MB nco.
Kev sib piv ntawm Apple A5X thiab NVIDIA Tegra3 yog tabulated hauv qab no.
| Apple A5X | Tegra 3 Series | |
| Hnub tso tawm | March 2012 | November 2011 |
| Type | MPSoC | MPSoC |
| Thawj Device | The new iPad (iPad 3 or iPad HD) | ASUS Transformer Prime |
| ISA | ARM v7 (32 ntsis) | ARM v7 (32 ntsis) |
| ARM Cortex-A9 (dual core) | ARM Cortex-A9 (Quad Core) | |
| CPU's Clock Speed | 1.2GHz |
Single Core - mus txog 1.4 GHz Plaub Cores - mus txog 1.3 GHz Tus Tub Ntxhais - 500 MHz |
| YGPU | PowerVR SGX543MP4 (quad core) | NVIDIA GeForce (12 cores) |
| GPU's Clock Speed | Tsis muaj | Tsis muaj |
| CPU/GPU Technology | TSMC's 45nm | TSMC's 40nm |
| L1 Cache |
32kB kev qhia, 32kB cov ntaub ntawv (rau CPU core) |
32kB kev qhia, 32kB cov ntaub ntawv (rau CPU core) |
| L2 Cache |
1MB (sib koom ntawm txhua lub CPU cores) |
1MB (sib koom ntawm txhua lub CPU cores) |
| Memory | 512MB DDR2, 533MHz | Txog 2GB DDR2 |
Summary
Hauv cov ntsiab lus, Apple A5X muaj peev xwm ntau dua thiab muab tias nws yuav raug siv los ntawm ib qho ntawm cov thev naus laus zis zoo tshaj plaws yuav ua rau A5X siv tau zoo dua. Raws li "X" hauv lub npe A5X qhia, A5X yuav ua lub luag haujlwm tseem ceeb hauv kev coj cov yeeb yaj kiab siab thiab cov duab rau cov khoom siv txawb xws li ntsiav tshuaj PCs. Qhov tseeb, nws yog qhov xav tau rau Apple kom muaj qhov ua tau zoo tshaj plaws graphics processor los tsav lawv cov retina zaub nrog qhov kev daws teeb meem siab tshaj plaws muaj rau cov ntsiav tshuaj PCs. Ntawm qhov tod tes, qhov zoo npaum li cas ntawm cov tub ntxhais CPU dual yuav daws tau qhov kev xav tau ntawm kev suav thaum Tegra 3 tawm nrog lub quad core CPU yuav tsum pom tom qab tso tawm nyob rau yav tom ntej (thaum qee qhov kev ntsuas ntsuas tau ua tiav).
