NVIDIA Tegra 2 vs Tegra 3 | Nvidia Tegra 3 (Quad Core Processor) vs Tegra 2 Ceev, Kev Ua Haujlwm
NVIDIA, Ameslikas yog GPU (Graphics Processing Unit) lub tuam txhab tsim khoom [tau lees tias tau tsim GPUs hauv lub nineties lig] 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. 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. Lub hom phiaj ntawm tsab xov xwm no yog los sib piv ob qhov tsis ntev los no Tegra series SoCs, uas yog NVIDIA Tegra 2 thiab NVIDIA Tegra 3.
Ob lub ntsiab lus tseem ceeb ntawm Tegra 2 thiab Tegra 3 yog lawv ARM raws CPU (Central Processing Unit, aka processor) thiab NVIDIA raws GPU. Ob leeg Tegra 2 thiab Tegra 3 yog raws li ARM's v7 ISA (kev qhia teeb tsa architecture, ib qho uas yog siv los ua qhov chaw pib ntawm kev tsim cov processor) thiab lawv GPUs yog raws li NVIDIA's GeForce. Lub CPU thiab GPU hauv ob qho tib si Tegra 2 thiab Tegra 3 yog tsim nyob rau hauv semiconductor technology hu ua 40nm ntawm TSMC (Taiwan Semiconductor Manufacturing Company).
Tegra 2 (Series)
Tegra 2 series SoCs tau pib ua lag luam thaum ntxov 2010, thiab thawj cov khoom siv los xa lawv yog qee cov ntsiav tshuaj tsis muaj npe nrov. Thawj qhov kev xa tawm ntawm tib yam hauv lub xov tooj smartphone tuaj thaum Lub Ob Hlis 2011 thaum LG tso nws lub xov tooj Optimus 2X. Tom qab uas muaj coob tus ntawm lwm lub xov tooj ntawm tes tau siv Tegra 2 series SoCs, qee qhov yog Motorola Atrix 4G, Motorola Photon, LG Optimus Pad, Motorola Xoom, Lenevo ThinkPad Tablet thiab Samsung Galaxy Tab 10.1.
Tegra 2 series SoCs (txheej txheem MPSoC, vim muaj ntau tus txheej txheem CPU xa tawm) muaj ARM Cotex-A9 raws li cov tub ntxhais kawm dual CPUs (uas siv ARM v7 ISA), uas feem ntau clocked ntawm 1GHz. Lub hom phiaj me me tuag, NVIDIA tsis txhawb NEON cov lus qhia (ARM's Advanced SIMD txuas ntxiv) hauv cov CPUs no. GPU ntawm kev xaiv yog NVIDIA's Ultra Low Power (ULP) GeForce uas muaj 8 cores ntim rau hauv nws (nws tsis yog qhov xav tsis thoob rau lub tuam txhab nto moo rau lawv ntau rau ntau cov tub ntxhais GPUs). GPUs tau teev nyob nruab nrab ntawm 300MHz txog 400MHz hauv cov chips sib txawv hauv koob. Tegra 2 muaj ob qho tib si L1 cache (kev qhia thiab cov ntaub ntawv - ntiag tug rau txhua tus tub ntxhais CPU) thiab L2 cache (sib koom ntawm ob lub CPU cores) hierarchies, thiab uas tso cai rau ntim txog 1GB DDR2 nco modules.
Tegra 3 (Series)
Thawj SoC (lossis MPSoC) hauv Tegra 3 series tau tso tawm thaum lub Kaum Ib Hlis 2011 thiab tseem yuav raug xa mus rau hauv cov khoom lag luam muag. NVIDIA thov tias qhov no yog thawj lub xov tooj ntawm tes super processor, rau muab tso ua ke quad core ARM Cotex-A9 architecture. Txawm hais tias Tegra 3 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 qis. fais fab 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. Tsis zoo li Tegra 2, Tegra 3 txhawb NEON cov lus qhia. GPU siv hauv Tegra 3 yog NVIDIA's GeForce, uas muaj 12 cores ntim rau hauv nws. Tegra 3 muaj ob qho tib si L1 cache thiab L2 cache uas zoo ib yam li Tergra 2 thiab uas tso cai rau ntim txog li 2GB DDR2 RAM.
Kev sib piv ntawm Tegra 2 (series) thiab Tegra 3 (series) MPSoCs yog tabulated hauv qab no:
| Tegra 2 Series | Tegra 3 Series | |
| Hnub tso tawm | Q1 2010 | Q4 2011 |
| Type | MPSoC | MPSoC |
| Thawj Device |
LG Optimus 2X (thawj zaug xa tawm mobile) |
Tsis tau xa tawm |
| Lwm yam khoom siv | Motorola Atrix 4G, Motorola Photon 4G, LG Optimus Pad, Motorola Xoom, Motorola Electrify, Lenevo ThinkPad Tablet, Samsung Galaxy Tab 10.1 | – |
| ISA | ARM v7 | ARM v7 |
| ARM Cortex-A9 (Dual Core) | ARM Cortex-A9 (Quad Core) | |
| CPU's Clock Speed | 1.0 GHz – 1.2 GHz |
Single Core - mus txog 1.4 GHz Plaub Cores - mus txog 1.3 GHz |
| YGPU | NVIDIA GeForce (8 cores) | NVIDIA GeForce (12 cores) |
| GPU's Clock Speed | 300MHz - 400MHz | Tsis muaj |
| CPU/GPU Technology | TSMC's 40nm | TSMC's 40nm |
| 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 1GB | Txog 2GB |
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 ua tau zoo dua lawv Tegra 2 series MPSoCs hauv kev suav thiab cov duab ua haujlwm. Lub tswv yim ntawm tus khub tseem ceeb yog qhov zoo nkauj heev, vim nws tuaj yeem muaj txiaj ntsig zoo rau cov khoom siv txawb, xws li cov khoom siv nyob rau hauv hom standby ntau dua li tsis tau thiab lawv yuav tsum tau ua haujlwm tom qab. Yuav ua li cas lub xov tooj ntawm tes kev lag luam yuav siv lub peev xwm, tseem tsis tau pom.
