Apple A7 vs A8 processors
Apple A7 thiab Apple A8 yog cov chips uas pom muaj nyob hauv cov khoom lag luam Apple xws li iPhones thiab iPads. Cov chips no hu ua SoC (System on Chip) vim tias lawv muaj tag nrho cov khoom siv hauv lub computer xws li processor, nco, lub sijhawm khoom siv, kev cuam tshuam, thiab kev tswj fais fab, ntawm ib lub nti. Kua A8 yog qhov tseeb nti uas Apple tam sim no siv raws li niaj hnub no thiab Apple A7 yog ib qho uas tau siv ua ntej A8. Apple A8 nti yog, yog li ntawd, ntau tshaj li A7 thiab yog li muaj peev xwm muab kev ceev thiab cov duab zoo dua rau kev siv thiab kev ua si.
Ob Apple A7 thiab A8 muaj chav tshwj xeeb hu ua GPU (Graphical Processing Unit) uas tau tsim tshwj xeeb los txhawb cov duab zoo dua. GPU ntawm A8 yog siab dua A7, yog li nws tuaj yeem txhawb kev ua si uas xav tau qib siab dua ntawm cov duab ua haujlwm. Lub processor yog cov cuab yeej uas yog lub luag haujlwm rau txhua qhov kev suav thiab tswj. Lub processor ntawm A8 muaj zog dua li ntawm A7, yog li A8 tuaj yeem muab kev ua tau zoo dua A7 rau kev siv. Tsis tas li ntawd, txij li cov cuab yeej siv rau kev tsim khoom A8 yog qhov niaj hnub thiab qib siab tshaj li qhov tau siv rau A7, A8 chips me me txawm tias muaj cov transistors ntau dua.
Apple A7 Review - nta ntawm Apple A7
Apple A7 tau tshaj tawm thawj zaug hauv iPhone 5S uas tau qhia rau lub khw hauv xyoo 2013. Nws muaj s ARMv8-A dual core CPU hu ua Cyclone uas qhov ceev yog nyob ib puag ncig 1.3-1.4GHz. Nws yog thawj zaug uas 64-ntsis processor tau qhia ntawm tus neeg siv xov tooj ntawm tes lossis ntsiav tshuaj computer. Samsung tau tsim cov A7 chips. Cov txheej txheem A28 nm yog siv rau kev tsim cov chips uas cov chips muaj ntau dua 1 billion transistors. Cov sensors raug tswj los ntawm kev sib koom ua ke hu ua M7 txhawm rau txuag lub zog. Muaj ob qhov txawv ntawm Apple A7 li APL 0698 thiab APL 5698. APL 0698 tau siv hauv iPhone 5S thiab iPad Mini 2 thaum APL 5698 tau siv hauv iPad Air. Qhov loj me tuag yog zoo tib yam hauv ob qho tib si, tab sis APL 0698 muaj 1 GB ntawm LPDDR3 RAM ntawm nti nws tus kheej thaum APL 5698 tsis muaj lub cim xeeb zoo li no.
Apple A8 Review - nta ntawm Apple A8
Apple A8 yog qhov tseeb Apple SoCas niaj hnub no uas qhov kev taw qhia tshwm sim thaum lub Cuaj Hlis 2014. Nws yog tam sim no siv hauv iPhone 6 thiab iPhone 6 ntxiv. Lub processor yog ib qho kev txhim kho ntawm ARMv8 dual core Cyclone processor. Apple A8 nti yog tsim los ntawm TSMC qhov twg Apple SoCchips yav dhau los tau tsim los ntawm Samsung. Cov txheej txheem 20-nanometer siab heev yog siv los tsim cov chips. Raws li Apple, A8 yog 50% ntau zog dua li A7. Qhov kev ua tau zoo ntawm A8 yog ntau dua A7, tab sis qhov loj me yog li 15% me dua A7. Lub co-processor hu ua M8 yog siv ua ke nrog A8 los pab kev ntsuas los ntawm cov sensors. Thaum Lub Kaum Hli 2014 nrog iPad Air 2, qhov sib txawv ntawm A8 hu ua A8X tau qhia uas muaj cov tub ntxhais ntxiv thaum qhov zaus ntxiv siab.
Qhov txawv ntawm Apple A7 thiab A8 processors yog dab tsi?
| Apple A7 | Apple A8 | |
| Hnub tso tawm | september 20th 2013 | Cuaj hlis 9 th 2014 |
| Tsim | Apple | Apple |
| Chaw tsim tshuaj paus | Samsung | TSMC |
| Yam tsawg kawg nkaus qhov loj | 28nm | 20nm |
| Die Size | 104 mm2 | 89mm2 |
| 2 x ARMv8 64 ntsis Cyclone cores | 2 x ARMv8 64 ntsis Txhim kho Cyclone cores | |
| Tsis muaj transistors | About 2 billion | Ntau tshaj 1 billion |
| Kev Qhia Txheej | ARMv8-A | ARMv8-A |
| Micro-architecture | Cyclone | Cyclone Generation 2 |
| Co-processor | Apple M7 | Apple M8 |
| RAM | 1 GB ntawm LPDDR3 DRAM (hauv APL0698). | 1GB ntawm LPDDR3 |
| YGPU | IMG Power VR G6430 | IMG Power VR GX6450 |
| L1 Cache | 64KB Kev qhia cache + 64 KB cov ntaub ntawv cache ib core | 64KB Kev qhia cache + 64 KB cov ntaub ntawv cache ib core |
| L2 Cache | 1MB sib koom | 1MB sib koom |
| L3 Cache | 4MB | 4MB |
Summary:
Apple A7 vs A8
Ob Apple A7 thiab A8 yog siv rau ntawm Apple cov khoom lag luam. Qhov tseeb yog Apple A8 uas yog tus ua tiav ntawm Apple A7. Apple A8 txawm tias me me, thaum piv rau A7, muaj kev ua tau zoo dua thiab siv zog ntau dua li A7. Ntxiv mus, A8 tuaj yeem ua cov duab zoo dua li A7. Yog li, feem ntau Apple A8 tuaj yeem khiav cov ntawv thov thiab ua si nrog kev ua haujlwm zoo dua li ntawm Apple A7.
