NVIDIA Tegra3 vs TI OMAP4460
Kab lus no piv ob qhov tsis ntev los no Multi Processor System-on-Chips (MPSoCs); NVIDIA Tegra3 thiab TI OMAP4460 tau xa mus rau hauv cov khoom siv hluav taws xob. Hauv cov ntsiab lus yooj yim, MPSoC yog lub khoos phis tawj nrog ntau cov txheej txheem ntawm ib qho kev sib xyaw ua ke (aka nti). Technically, MPSoC 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 leeg NVIDIA Tegra3 thiab TI OMAP4460 tau tso tawm rau lub khw hauv lub quarter kawg ntawm 2011.
Feem ntau, cov khoom tseem ceeb ntawm MPSoC yog nws CPU (Central Processing Unit) thiab GPU (Graphics Processing Unit). Cov CPUs hauv NVIDIA Tegra3 thiab TI OMAP4460 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) ntawm 32-ntsis cov ntaub ntawv loj.
NVIDIA Tegra3 (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 Tegra3 series tau tshaj tawm thaum lub Kaum Ib Hlis 2011 thiab cov kev hloov kho tshiab tau tso tawm hauv thawj lub quarter thib ob ntawm xyoo 2012. Tegra3 series MPSoCs tau xa mus rau ntau cov neeg siv khoom siv xws li ASUS Eee Pad Transformer Prime rau Google Nexus 7.
NVIDIA tau thov tias Tegra3 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. Nyob rau hauv nws thawj tso tawm, thaum lub ntsiab cores yuav clocked ntawm 1.3GHz (thaum tag nrho plaub cores yog active) mus rau 1.4GHz (thaum tsuas yog ib qho ntawm plaub cores yog active), lub auxiliary cores yog clocked ntawm 500MHz. Cov kev hloov kho tshiab tshaj tawm tau txhawb lub moos nrawm dua. 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 ntawd, txuag lub zog. GPU siv hauv Tegra3 yog NVIDIA's GeForce uas muaj 12 cores ntim rau hauv nws. Tegra3 muaj ob qho tib si L1 cache thiab L2 cache uas zoo ib yam li Tergra2, thiab nws tso cai ntim txog li 2GB DDR2 RAM.
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 MPSoC ntawm kev xaiv rau Samsung / Google lub 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 1.2GHz-1.5GHz, thiab GPU yog clocked ntawm 384MHz (ib tug kuj siab zaus 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 NVIDIA Tegra3 thiab TI OMAP4460
| Tegra 3 Series | TI OMAP 4460 | |
| Hnub tso tawm | Q4, 2011 | Q4, 2011 |
| Type | MPSoC | MPSoC |
| Thawj Device | Asus Eee Pad Transformer Prime | Archos 80 G9 |
| Lwm yam khoom siv | Google Nexus 7 | Google Galaxy Nexus Xov tooj |
| ISA | ARM v7 (32 ntsis) | ARM v7 (32 ntsis) |
| ARM Cortex-A9 (Quad Core) | ARM Cotex A9 (Dual Core) | |
| CPU's Clock Speed |
Single Core - mus txog 1.4 GHz Plaub Cores - mus txog 1.3 GHz Tus Tub Ntxhais - 500 MHz |
1.2GHz-1.5GHz |
| YGPU | NVIDIA GeForce (12 cores) | PowerVR SGX540 |
| GPU's Clock Speed | 520MHz | 384MHz |
| CPU/GPU Technology | TSMC's 40nm | 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 txhua lub CPU cores) |
1MB (sib koom ntawm txhua lub CPU cores) |
| Memory | Txog 2GB DDR2 | 1GB |
Summary
Hauv cov ntsiab lus, NVIDIA, hauv lub npe Tegra 3 series, tau tawm los nrog MPSoC nrog lub peev xwm siab. Nws pom tseeb tias ua tau zoo dua ob qho tib si hauv kev suav lub zog thiab cov duab kos duab. Lub tswv yim ntawm tus khub tseem ceeb yog qhov zoo nkauj heev vim nws tuaj yeem siv siab rau cov khoom siv mobile xws li cov khoom siv nyob rau hauv hom standby ntau dua li tsis tau thiab lawv yuav tsum tau ua haujlwm tom qab. Qee tus tuaj yeem sib cav hais tias cov khoom kim heev, tsis tshua muaj hluav taws xob siv hauv cov tub ntxhais ua khub tuaj yeem ua rau cov neeg siv khoom hnyav. Txawm li cas los xij, tsis pub dhau ib xyoos, nrog kev hloov kho kom raug NVIDIA tau ua rau ntau tus neeg siv khoom siv los siv nws Tegra3 MPSoCs thiab cov khoom siv hloov pauv Tegra3 tau loj hlob raws li peb hais.
