Musiyano uripo pakati peDDR4 neDDR5 RAM uri mukumhanya uye kugona
Sekureva kwaJEDEC, chizvarwa chinotevera DDR5 chisina kuwanikwa memory memory (RAM) chichava nekukurumidza nekukurumidza sezvazvino DDR4 RAM payakaburitswa.
JEDEC yakazivisa kuti ichapedzisa zviyero zveDDR5 imwe nguva muna 2018, uye sangano rinoti DDR5 ichapeta bandwidth uye density pamusoro peDDR4, uye kuuya nekuwedzera kwesimba rekushandisa.
Kunyangwe chiyero chichave pamutemo gore rinouya, chizvarwa chitsva hachizove chakagadzirira vagadziri kusvika mushure me2020.
Izvo zvakakosha kuti uzive kuti iyo DDR4 standard yakagadziridzwa muna2012, asi zvakatova kusvika 2015, apo ma processor nemaSoC aifanira kuvandudzwa kuti vatsigire.
Chii chinonzi DDR5
GDDR5 (Dual Graphics Data Rate Version 5) SDRAM imhando yepamusoro-soro yeDRAM yemifananidzo kadhi yakagadzirirwa kushandiswa kwekombuta yepamusoro-bandwidth.
Kufanana neyakatangira, GDDR4, yakavakirwa paGDDR5 SDRAM DDR3 iyo ine mitsara yakapetwa kaviri kupfuura DDR2 SDRAM, asi zvakare iine GDDR5 ye8-bit wide prefetch buffers akafanana neGDDR4. GDDR5 SGRAM inoenderana nezviyero zvinotaurwa muGDDR5 kutaurwa neJEDEC. Inoshandisa DDR 8N prefetch architecture interface kuti iwane kushanda kwepamusoro uye kushanda kunogona kugadzirwa kuti imhanye mu32 x kana 16 x (clamshell) modhi yakaonekwa panguva yekutanga mudziyo. GDDR5 2 yekufambisa interface ine 32-bit wachi yezwi pane kutenderera (WCK) kunyora kwedata kuenda/kubva kumapini eI/O. Kuwana kunoenderana kunosanganisira -8N prefetch,
Kana kunyora kana kuverenga, kubva kuCK 2 data yekufambisa kutenderera pane 256-bit yakakura wachi. Iyo yemukati yekurangarira musimboti ine sere WCK data kuchinjirwa pahafu-kutenderera inoenderana ne32-bit upamhi pamapini eI/O.
Musiyano uripo pakati peDDR4 neDDR5
GDDR5 inoshanda ine akasiyana wachi mhando. Iyo misiyano yeawa yekuraira (CK) sereferenzi yekero uye zvekurayira zvinyore, nyora musiyano weawa (WCK) sereferensi inoverenga nekunyora. Kuti zvive zvakanyatsojeka, chinangwa cheSGRAM GDDR5 wachi, imwe neimwe yadzo inoiswa kune maviri byte.
Iyo WCK inoshanda kaviri CK's frequency. Kutora GDDR5 ne5 Gbit/s data rate papini semuenzaniso, wachi yeCK inoshanda ne1.25 GHz uye WCK ine 2.5 GHz.
CK uye WCK wachi ichaenderana panguva yekutanga uye kudzidziswa kwekutevedzana. Uku kuenderana kunogonesa kuverenga nekunyora nekushomeka latency. Imwe 32-bit GDDR5 uye Pini Pini, zvikumbiro zvedu zvakaratidza uye sampuli GDDR5, uye zvakaratidza bepa pamatekinoroji ari kuseri kweGDDR5.
. Musi waChivabvu 10, 2008, Kimunda akazivisa mavhoriyamu ekugadzira 512 GDDR5 modules akaiswa pa3.6 Gbit/s (900 MHz), 4.0 Gbit/s (1 GHz), uye 4.5 Gbit/s (1.125 GHz). Kuti uwane rumwe ruzivo, shanya Wikipedia
