Apple A5 vs TI OMAP4460 | OMAP 4460 vs Apple A5 Processors Ceev, Performance
Apple A5 thiab Texas Instruments OMAP4460 yog System-on-Chips (SoC) xa mus rau hauv cov khoom siv hluav taws xob los ntawm Apple thiab Texas Instruments (TI) feem. 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 A5 thiab TI OMAP4460 yog Multiprocessor System-on-Chip (MPSoC), qhov uas tus tsim siv multiprocessor architecture rau kev siv lub computer muaj zog. Apple tso tawm A5 thaum Lub Peb Hlis 2011 nrog nws lub iPad2 thiab TI's OMAP (cov ntawv luv rau Qhib Multimedia Application Platform) 4460 tuaj rau lub khw hauv lub quarter kawg ntawm 2011.
Feem ntau, cov khoom tseem ceeb ntawm SoC yog nws CPU (Central Processing Unit) thiab GPU (Graphics Processing Unit). Cov CPUs hauv Apple A5 thiab TI OMAP4460 yog raws li ARM's (Advanced RICS - Txo Cov Kev Qhia Teeb Lub Computer - Tshuab, tsim los ntawm ARM Holdings) v7 ISA (Instruction Set Architecture, uas yog siv los ua qhov chaw pib tsim lub processor) thiab tsim khoom. siv lub tshuab semiconductor hu ua TSMC's (Taiwan Semiconductor Manufacturing Company) 45nm.
Apple A5
A5 tau muag thawj zaug hauv lub Peb Hlis 2011, thaum Apple tso nws cov ntsiav tshuaj tshiab, iPad2. Tom qab Apple lub iPhone tsis ntev los no clone, iPhone 4S tau tso tawm nrog Apple A5. Apple A5 yog tsim los ntawm Apple thiab tsim los ntawm Samsung sawv cev ntawm Apple. Raws li kev tawm tsam rau nws thawj Apple A4, A5 muaj dual cores hauv nws ob qho tib si CPU thiab GPU. Yog li, technically Apple A5 tsis yog SoC xwb, tab sis kuj yog MPSoC (Multi Processor System ntawm Chip). A5's dual core CPU yog raws li ARM Cotex-A9 processor (uas siv tib yam ARM v7 ISA uas yog siv los ntawm Apple A4), thiab nws cov tub ntxhais dual GPU yog raws li PowerVR SGX543MP2 cov duab processor. A5's CPU feem ntau yog clocked ntawm 1GHz (lub clocking siv zaus scaling; yog li ntawd, lub moos ceev yuav hloov ntawm 800MHz mus rau 1GHz, raws li lub load, lub hom phiaj txuag lub zog), thiab nws GPU yog clocked ntawm 200MHz. A5 muaj ob qho L1 (kev qhia thiab cov ntaub ntawv) thiab L2 cache nco. A5 los nrog 512MB DDR2 nco pob uas feem ntau clocked ntawm 533MHz.
TI OMAP4460
OMAP4460 tau tso tawm nyob rau lub quarter thib plaub ntawm 2011 thiab raws li PDAdb.net nws tau xub muab tso rau hauv Archos lub cuaj tiam ntsiav tshuaj PCs. Nws yog SoC ntawm kev xaiv rau yav tom ntej (tso tawm thaum nruab nrab Lub Kaum Ib Hlis 2011) Google's Galaxy Nexus ntse xov tooj tsim los ntawm Samsung rau Google. CPU siv hauv OMAP4460 yog ARM's dual core Cotex A9 architecture thiab GPU siv yog PowerVR's SGX540. Hauv OMAP4460, CPU yog clocked ntawm 1.5GHz, thiab GPU yog clocked ntawm 384MHz (ib tug kuj muaj zaus heev piv rau clocking ntawm tib GPU nyob rau hauv lwm yam SoCs qhov twg SGX540 tau deployed). Lub nti tau ntim nrog ob qho tib si L1 thiab L2 cache hierarchies hauv nws lub CPU dual core thiab tau ntim nrog 1GB DDR2 lub zog qis RAM.
Kev sib piv ntawm Apple A5 thiab TI OMAP4460 yog tabulated hauv qab no.
| Apple A5 | TI OMAP4460 | |
| Hnub tso tawm | March 2011 | Q4, 2011 |
| Type | MPSoC | MPSoC |
| Thawj Device | YiPad2 | Archos 80 G9 |
| Lwm yam khoom siv | YiPhone 4S | Galaxy Nexus (yuav tso tawm thaum nruab nrab Kaum Ib Hlis) |
| ISA | ARM v7 (32 ntsis) | ARM v7 (32 ntsis) |
| ARM Cotex A9 (Dual Core) | ARM Cotex A9 (Dual Core) | |
| CPU's Clock Speed | 1GHz (800MHz-1GHz) | 1.5GHz |
| YGPU | PowerVR SGX543MP2 (Dual Core) | PowerVR SGX540 |
| GPU's Clock Speed | 200MHz | 384MHz |
| CPU/GPU Technology | 45nm | 45nm |
|
L1 Cache |
32kB kev qhia, 32kB cov ntaub ntawv (rau txhua tus tub ntxhais CPU) |
32kB kev qhia, 32kB cov ntaub ntawv (rau txhua tus tub ntxhais CPU) |
| L2 Cache |
1MB (sib koom ntawm CPU cores) |
1MB (sib koom ntawm CPU cores) |
| Memory | 512MB Tsawg Fais Fab DDR2, moos ntawm 533MHz | 1GB Tsawg Fais Fab (LP) DDR3 |
Summary
Hauv cov ntsiab lus, Apple A5 thiab TI OMAP4460 muaj cov yam ntxwv sib piv. Ob leeg siv tib lub CPU architecture (nrog ntau dua clocking zaus hauv OMAP4460). Qhov sib txawv tseem ceeb ntawm ob tuaj yeem pom hauv lawv qhov kev xa tawm ntawm GPUs: Thaum Apple A5 tau siv lub dual core GPU tshiab los ntawm PowerVR thiab clocked ntawm qis zaus, TI OMAP4460 tau siv GPU qub nrog lub moos zoo dua qub (Hwj chim SGX543MP2. @ 200MHz vs. PowerVR SGX540 @ 384MHz). Txawm li cas los xij, lawv ob leeg yuav tsum ua qhov theoretical zoo sib xws, kev sib piv zoo yuav tsum qhia qhov tseeb. Txawm hais tias, ob leeg muaj qhov zoo sib xws CPU cache configurations, OMAP4460 muaj ib tug loj dua (1GB vs. 512MB) nco thiab, yog li ntawd, yuav outperform rau nco tshaib plab daim ntaub ntawv.
