I-DDR5 Memory Timings: Iqondo Lokuqala Ngokuphezulu Nenjini Yokuqondisa Futhi Ukunikeza Okuningi

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Iphepha Lesi

Izinkomo

Ngiyabuzisa

Iphutha

Vumela Nethu

imilinganiselo yememori ye-DDR5

Imithimingi ye-DDR5 yememori ibonisa ukuphumelela kakhulu kwezinhlelo yokusebenza kwamemori, inikeza izintulelo eziphezulu nefficiency ngaphandle kwegeneration ezindala. Le mithimingi iyachaza kanjani memori ingasebenze ngokushesha xa kuthathwa isicelo kusiprocessor, nge-DDR5 ikunquma imithimingi ephethelwe kakhulu kunoma yiziphi ezinye zezinhlelo zokuphatha. I-architecture yenqubo enobuchwepheshe okuphethwe kakhulu yenqobo le-ECC (on-die ECC), ukuphakama okuhlelwe kakhulu komoya, kunoma futhi ama-dual-channel architecture obunxulumene nomoduli omnye. Lapho kusebenza emandleni aphezulu kusuka ku-4800 MT/s bese kuya pansi ku-8400 MT/s, imithimingi ye-DDR5 yememori ichazwe ngu-CAS Latency (CL), RAS to CAS delay (tRCD), Row Precharge Time (tRP), kunoma futhi Row Active Time (tRAS). Imithimingi yenqubo inquma ukuphindeka kwe-burst lengths kunoma futhi ukucubungula okuhlelwe kakhulu kokulayisha amadatha ngendlela efanele kakhulu nokunciphisa ukuzalwa. Lo msebenzi ungowabo kakhulu lapho kusebenzela kumisebenzi abaningi amadatha, kumazinga yokusebenza okuphezulu, kunoma futhi kumagaming systems aphambene noma kudinga ukukhawuleza kwe-memori.

Imikhiqizo Emisha

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Imithambo ye-DDR5 yekhona ukunikeza amaphethelo amaningi athokozisa ukuthi ayingakumele kakhulu kuzo zokusebenza ngokunyukela. Okokuqala, ayingakumelela ukuba abe nemibandwidth enkulu, ngokuba kubola ukuba kubeka kuma-MT/s amaholo e-4800, okungukuphela okwesibili kwe-DDR4 esisodwa. Le bandwidth enkulu iyenza ukuthi idatha ikhululwe ngokushesha futhi isithombi sibe ngokushesha. Isithambo esibuyeke we-mitambo sikhona ukuthuthukwa kwebhurisi, kubola kwe-8 bytes kwe-DDR4 ku-16 bytes, okungukuphela okwesibili kwezindawo zekhona zokuthuthwa ngokwenye. Isibonelo esijabulayo ngokuthi kungcono ukusebenzisa amavolt ezingaphansi, kubola kwe-1.1V kwe-DDR5 ku-1.2V kwe-DDR4, okungakho ukunciphisa ukusebenzisa amavolt ngapha kokuwukhile. Le PMIC (Integrated Power Management IC) ekhona kwezimodi zokusebenza ye-DDR5 iyenza ukuthi ivholtic ikhutshelwe kanye ne-stability, iyenza ukuthi isebenze ngokuthuluthu xa kusebenzwa ngokugcwele. Le teknoloji nayo iyenza ukuthi kungcono ukulungisa amaphoyinti ngokuthathwa kwe-ECC, iyenza ukuthi idatha ibe yekhona kanye ne-stability. Kuzo abasebenzisa abaqondileyo, le mitambo engcono iyenza ukuthi ukusebenzisa izinketho eziningi kanye nekhona yokuthutha idatha kuzo zokusebenza eziningi zokuthuthwa. Abakhethi bethola ukunciphisa isikhathi sokulayisha futhi ukusebenza ngokuthuthu, ngokudinga kuzo zindlela ezidinga ukuthutha kakhulu kwekhona. Le mitambo engcono nayo iyenza ukuthi kungcono ukuthuthwa kwezinye izinto ezosha, iyenza ukuthi le DDR5 ibe yekhona kakhulu kunezinye izinhloso.

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Amane a-5 Okuhle kweDDR4 Memory Ngokwesiphumo Sakhumishi

Thola Isilinganiso Samahhala

Ummeleli wethu uzokuthinta masisha.

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imilinganiselo yememori ye-DDR5

imemori ye-ddr5 yamaseva

ukwanda lwe-ddr5 ye-HPC

i-brand leddr5 memory

umphathi wememori yeddr5

izilungiselelo zokusebenza kwememori ye-ddr5

ubunzima bokugcinwa kwamemori ye-DDR5

Ukuphathwa Kwesikhathi Sokuthuthukisa

Isithuthukisiro sesikhathi sokuthuthukiswa kwe-DDR5 sibonisa indlela entsha yokuphatha imemori, enobuchwepheshe obusha lwamaparamitha wesikhathi esebenza ngendlela elandelanayo ukulethwa ukusebenza okuyilungile. Isithuthukiso senza amaphesheshi kwegatsha evela kugatsheni esinye akuphawuliwe yimaphesheshi. Lokhu kubangela ukunciphisa okukhulu kwesikhathi futhi kuthuthukise ukuphendula kwezinhlahlamba ngokujulile. Isithuthukiso senza uhlobo oluthuthukisiwe lomgca oqukethwe ukwenza ukusinkroniwe ngakunye phakathi kwekhontrola lemimori ne-DRAM, lokhu kungenzeka ukusebenza okudavulayo emandleni angeke aphansi. Ngokudonsa, isithuthukiso sinikela izindlela ezifihlekileyo kungena ngalokho ngalo modili wememori, okuhlanganisa ukunombandlwana kwezindlela ezifihlekileyo ukuthuthukisa ukusebenza nokuvuka komlando.

Ukutholwa nokulungisa amaphoyinti enhle

Izindiko zokuphatha amaphoyinti kwi-DDR5 timing systems ishukumisa ngokubaluleka ukusebenza komemori nokulawula kwedatha. Ukusebenzela kwe-ECC (Error Correction Code) ekujwayelekile okwenyokeni kumelela inkumbulo yokuqala yokuphatha idatha engavunyelwa, ikusebenza kuzinga lokuchipha b4 data ingiyelwe kumemori controller. Le ndiko ingadetekta nakuthuli inye le-bit errors nge-real-time, futhi ingadetekta amaphoyinti angaphezulu okuqondana ne-bit esistimweni. I-timing architecture iyindlela ebonakalayo ye-CRC (Cyclic Redundancy Check) kubantu abasebenzisa uku-faka noku-thenga, ubonisa ukulawulwa kwedatha lapho kudluliswa. Le ndiko yokuphatha amaphoyinti ngokugcwele isebenza ngaphandle kokwengeza into ethathwe ngendawo yokusebenza komemori, ibe yisigaba sokuphezulu elikhona ukusebenza ngokugcwele.

Ukulawula Amameko Okusebenza

Isinkwa se-DDR5 sokuhlela isicathami sezinhloso zokuphatha amandla okuqondile fana neqhinga elikhulu kumemori ngokuholela. Isisiteme senekweyo ye-Power Management Integrated Circuit (PMIC) enikeza ukulawulwa nokukhangela kwevholthi ngezici ezinhle. Lokhu kuvumela ukushintshwa kwevholthi ngokushesha ngokwesixeko, ukuze kwenyekelwe ukusebenzisa amandla ngaphandle kokuthile kwekhisijwe. Izincazo zokuhlela zenziwe ukuze senze nezinhloso zokuphatha amandla, zisebenzisa izinsuku eziqondile ze-refresh nezimo zokuphuma kwamandla. Isicathami sinikela amandla eminye imigqa yevholthi, sivumela izindawo ezahlukene zememori ukusebenza ngamavholthi angcono kuzindawo zazo. Lokhu kuhlukile kwekulawula ukudluliswa kwamandla nokuhlelwa kwezicathami kubangela ukuthuthukiswa kwezinto zokuxhasama nezobulungiswa, ngakumbi kuzindlela zokusebenzela eziningi.