Apple A4 vs Qualcomm Snapdragon S2 Ceev, Kev Ua Haujlwm | Qualcomm Snapdragon 7X30 (MSM7230, MSM7630), 8X55 (MSM8255, MSM8655)
Kab lus no piv ob qhov System-on-Chips (SoC), Apple A4 thiab Qualcomm Snapdragon S2, ua lag luam los ntawm Apple thiab Qualcomm feem tsom rau cov khoom siv tes tuav. Hauv Layperson lub sij hawm, SoC yog lub computer ntawm ib qho IC (Integrated Circuit, aka nti). Technically, SoC yog IC uas koom ua ke 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. Kua tso tawm nws cov A4 processor nyob rau hauv lub Peb Hlis 2010 nrog nws inaugural ntsiav tshuaj PC, Kua iPad thiab cov thawj mobile ntaus ntawv siv Qualcomm Snapdragon S2 series SoC yog HTC Vision tso tawm nyob rau hauv Lub kaum hli ntuj 2010.
Feem ntau, cov khoom tseem ceeb ntawm SoC yog nws CPU (Central Processing Unit) thiab GPU (Graphics Processing Unit). CPUs nyob rau hauv ob qho tib si A4 thiab Snapdragon S2 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) thiab ob leeg siv TSMC's 45nm tshuab rau fabrication.
Apple A4
A4 yog thawj zaug ua lag luam thaum Lub Peb Hlis 2010, thiab Apple siv nws rau lawv Apple iPad, thawj ntsiav tshuaj PC ua lag luam los ntawm Apple. Tom qab kev xa tawm hauv iPad, Apple A4 tom qab tau xa mus rau hauv iPhone4 thiab iPod kov 4G. A4's CPU yog tsim los ntawm Apple raws li ARM Cortex-A8 processor (uas siv ARM v7 ISA), thiab nws GPU yog raws li PowerVR's SGX535 graphics processor. CPU hauv A4 yog clocked ntawm ib tug ceev ntawm 1GHz, thiab GPU lub moos ceev yog ib tug paub tsis meej (tsis tau qhia los ntawm Apple). A4 muaj ob qho tib si L1 cache (kev qhia thiab cov ntaub ntawv) thiab L2 cache hierarchies, thiab nws tso cai rau ntim DDR2 nco blocks (txawm hais tias nws tsis muaj lub cim xeeb module ntim thaum chiv thawj). Qhov ntau thiab tsawg ntawm lub cim xeeb ntim tau sib txawv ntawm cov khoom siv sib txawv xws li 2x128MB hauv iPad, 2x256MB hauv iPhone4.
Qualcomm Snapdragon S2
Txawm hais tias Qualcomm tau tshaj tawm ntau tus Snapdragon SoCs nyob rau peb lub xyoos dhau los raws li cov npe lag luam sib txawv, xws li MSM7230, MSM7630 thiab lwm yam, thaum Lub Yim Hli 2011, lawv tau txiav txim siab muab tag nrho lawv nyob rau hauv plaub lub npe yooj yim, xws li Snapdragon S1, S2, S3 thiab S4, kom cov neeg siv tuaj yeem nkag siab zoo dua lawv cov khoom thiab zam kev tsis meej pem. Yog li ntawd, cov npe loj ntawm SoCs thawj lub npe hu ua tus kheej raug muab tso ua ke rau saum toj no. Cov hauv qab no yog SoCs them raws li S2:
Qualcomm Snapdragon S2: 7X30 [MSM7230, MSM7630], 8X55 [MSM8255, MSM8655
Snapdragon S2 yog tsav los ntawm Qualcomm tus kheej Scorpion CPU (aka processor) thiab yog raws li Qualcomm Andreno GPU. Txawm hais tias Scorpion siv ARM's v7 ISA, lawv tsis siv ARM's CPU tsim xws li nrov ARM Cortex series rau lawv cov qauv tsim. Snapdragon S2 SoCs muaj Qualcomm Scorpion ib leeg tub ntxhais CPUs, uas feem ntau yog clocked ntawm 800MHz-1.4GHz. GPU ntawm kev xaiv rau cov SoCs no yog Qualcomm's Adreno 205. Snapdragon S2 muaj ob qho tib si L1 cache (qhia thiab cov ntaub ntawv) thiab L2 cache hierarchies thiab tso cai rau ntim txog 1GB qis zog DDR2 nco modules.
Snapdragon S2 SoCs tau pom thawj zaug hauv lub quarter thib ob ntawm 2010. Thawj lub xov tooj ntawm tes siv Snapdragon S2 SoC yog HTC Vision thaum Lub Kaum Hli 2010. Txij thaum ntawd los, ntau lub xov tooj ntawm tes tau siv SoC los ntawm pab pawg no. thiab rau npe ob peb: LG Optimus7, HTC Desire, HP Veer, HTC Ignite, HTC Prime, Sony Ericsson Xperia Pro, thiab Motorola Triumph.
Kev sib piv ntawm Apple A4 thiab Qualcomm Snapdragon S2 yog tabulated hauv qab no.
| Apple A4 | Qualcomm Snapdragon S2 | |
| Hnub tso tawm | March 2010 | Q2 2010 |
| Type | SoC | SoC |
| Thawj Device | Nyob iPad | HTC Vision |
| Lwm yam khoom siv | iPhone 4, iPod kov 4G | LG Optimus7, HTC Desire, HP Veer, HTC Ignite, HTC Prime, Sony Ericsson Xperia Pro, Motorola Triumph |
| ISA | ARM v7 (32 ntsis) | ARM v7 (32 ntsis) |
| ARM Cotex A8 (Single Core) | Qualcomm Scorpion (Single Core) | |
| CPU's Clock Speed | 1.0 GHz | 800 MHz - 1.4 GHz |
| YGPU | PowerVR SGX535 | Qualcomm AdrenoTM205 |
| CPU/GPU Technology | TSMC's 45nm | TSMC's 45nm |
| L1 Cache | 32kB kev qhia, 32kB cov ntaub ntawv | Tsis paub |
| L2 Cache | 512kB | Tsis paub |
| Memory | iPad muaj 256MB Tsawg Zog DDR2 | Txog 1GB DDR2 |
Summary
Hauv cov ntsiab lus, Apple A4 thiab Qualcomm Snapdragon S2 muaj cov yam ntxwv sib piv. Ob leeg tau siv CPU architecture zoo sib xws [ISA tib yam, cov khoom siv sib txawv] (nrog rau qhov muaj peev xwm ua haujlwm nrawm dua hauv Snapdragon S2). Hauv ntu GPU, Adreno 205 paub tias ua tau zoo dua PowerVR SGX535.
