Ihe dị iche n'etiti DDR4 na DDR5 RAM dị na ọsọ na ike
Dị ka JEDEC si kwuo, ọgbọ na-esote DDR5 random access memory (RAM) ga-adị okpukpu abụọ karịa DDR4 RAM ugbu a mgbe ewepụtara ya.
JEDEC ekwuputala na ọ ga-emecha ụkpụrụ DDR5 n'oge ụfọdụ na 2018, nzukọ ahụ na-ekwukwa na DDR5 ga-eme ka bandwidth na density okpukpu abụọ karịa DDR4, wee bịa na mmụba na arụmọrụ ike.
Agbanyeghị na ọkọlọtọ ahụ ga-abụ nke gọọmentị n'afọ na-abịa, ọgbọ ọhụrụ agaghị adị njikere maka ndị nrụpụta ruo mgbe 2020 gachara.
Ọ dị mma ịmara na emechara ọkọlọtọ DDR4 na 2012, mana ọ bụghị ruo n'afọ 2015, mgbe a ga-emelite ndị nrụpụta na SoCs iji kwado ya.
Gịnị bụ DDR5
GDDR5 (Dual Graphics Data Rate Version 5) SDRAM bụ ụdị kaadị eserese DRAM dị elu emebere maka ngwa kọmputa nwere bandwidth dị elu.
Dị ka onye bu ya ụzọ, GDDR4, ọ dabere na GDDR5 SDRAM DDR3 nke nwere ahịrị data ugboro abụọ karịa DDR2 SDRAM, mana o nwekwara GDDR5 nke 8-bit wide prefetch buffers yiri GDDR4. GDDR5 SGRAM na-agbaso ụkpụrụ akpọrọ na nkọwapụta GDDR5 nke JEDEC. Ọ na-eji DDR 8N prefetch architecture interface iji nweta arụmọrụ dị elu yana ọrụ enwere ike ịhazi ka ọ na-agba ọsọ na ọnọdụ 32 x ma ọ bụ 16 x (clamshell) achọpụtara n'oge mmalite ngwaọrụ. GDDR5 2 njem interface nwere okwu elekere 32-bit kwa okirikiri (WCK) dee data gaa na / site na ntụtụ I/O. Nnweta kwekọrọ na ya nwere prefetch -8N,
Ma ọ bụ dee ma ọ bụ gụọ, site na okirikiri mbufe data CK 2 na elekere obosara 256-bit. Isi ebe nchekwa dị n'ime nwere nnyefe data WCK asatọ na elekere ọkara okirikiri kwekọrọ na obosara nke 32 bit na ntụtụ I/O.
Ọdịiche dị n'etiti DDR4 na DDR5
GDDR5 na-arụ ọrụ na ụdị elekere dị iche iche. Iwu ọdịiche elekere (CK) dị ka ntụaka maka adreesị na ntinye iwu, dee ọdịiche elekere (WCK) dịka ntụaka na-agụ ma na-ede. Iji bụrụ nke ziri ezi, ebumnuche nke SGRAM GDDR5 clocks, nke ọ bụla n'ime ha na-edobe bytes abụọ.
WCK na-arụ ọrụ ugboro abụọ CK. Iji GDDR5 nwere ọnụego data 5 Gbit/s kwa pin ka ọmụmaatụ, elekere CK na-arụ ọrụ na 1.25 GHz yana WCK nwere 2.5 GHz.
A ga-ahazi elekere CK na WCK n'oge mmalite na ọzụzụ nke usoro. Ndakọrịta a na-enyere aka ịgụ na ide ihe na obere oge. Otu 32-bit GDDR5 na Pin Pin, ngwa anyị egosipụtala ma gosipụta GDDR5, ma gosipụta akwụkwọ na teknụzụ dị n'azụ GDDR5.
. Na Mee 10, 2008, Kimunda kwupụtara mpịakọta mmepụta nke 512 GDDR5 modul nke 3.6 Gbit/s (900 MHz), 4.0 Gbit/s (1 GHz), na 4.5 Gbit/s (1.125 GHz). Maka ozi ndị ọzọ, gaa na Wikipedia
