Raws li ib feem ntawm GDC 2019 lub rooj sib tham, Google tau tuav nws tus kheej qhov kev tshwm sim uas nws tau qhia nws qhov kev pabcuam tshiab streaming game Stadia. Peb twb tau tham txog cov kev pabcuam nws tus kheej, thiab tam sim no peb xav qhia rau koj paub ntau ntxiv txog yuav ua li cas Google tshiab system ua haujlwm, vim tias nws siv ntau yam kev daws teeb meem tshwj xeeb rau qhov system no.
Lub ntsiab tseem ceeb ntawm Google lub system yog, ntawm chav kawm, graphics processors. Ntawm no, kev cai daws teeb meem los ntawm AMD yog siv, uas yog raws li Vega graphics architecture. Nws tau tshaj tawm tias txhua GPU muaj 56 lub khoos phis tawj (Compute Units, CU), thiab tseem tau nruab nrog HBM2 nco.
Tej zaum koj yuav xav tias Google siv cov ntawv teev lus zoo ib yam li cov neeg siv khoom Radeon RX Vega 56. Txawm li cas los xij, qhov tseeb, AMD cov kev cai daws teeb meem muaj ntau qhov sib txawv tseem ceeb. Ua ntej, nws siv lub cim xeeb nrawm dua nrog bandwidth ntawm 484 GB / s. Cov neeg siv khoom Radeon RX Vega 64 muaj lub cim xeeb zoo ib yam, thaum tus yau Radeon RX Vega 56 siv lub cim xeeb tsawg dua (410 GB / s). Cia peb tam sim ntawd nco ntsoov tias tag nrho cov cim xeeb hauv lub kaw lus yog 16 GB, ntawm qhov ib nrab, pom meej, yog HBM2 video nco, thiab lwm yam yog DDR4 RAM.
Tab sis qhov tseem ceeb tshaj, Google thov 10,7 teraflops ntawm kev ua tau zoo rau nws cov GPUs, pom meej hauv kev suav ib zaug (FP32). Cov neeg siv khoom Radeon RX Vega 56 tsuas yog muaj peev xwm ntawm 8,3 teraflops. Nws yuav yog qhov xav tau los xav tias cov kev daws teeb meem rau Google siv GPUs nrog ntau zaus. Qhov no, nyob rau hauv lem, qhia tias AMD tau tsim ib tug graphics processor rau Stadia ntawm lub tshiab Vega II architecture, thiab nws yog tsim los siv 7-nm txheej txheem technology.
Raws li rau lub processor, Google tsis qhia meej txog qhov chaw tsim tshuaj paus kev daws teeb meem uas nws siv hauv Stadia cov kev pabcuam. Nws tsuas yog hais tias qhov no yog kev cai x86-tshaj processor nrog zaus ntawm 2,7 GHz, nrog 9,5 MB ntawm cache nyob rau theem thib ob thiab thib peb, nrog rau ntau txoj xov (Hyperthreading) thiab kev txhawb nqa rau AVX2 cov lus qhia. Lub cache loj thiab lub npe ntawm multithreading li "HyperThreading" qhia tias qhov no yog Intel nti. Txawm li cas los xij, kev txhawb nqa tsuas yog AVX2 yam tsis muaj AVX512 niaj hnub no qhia ncaj qha rau peb rau AMD, uas, ntxiv rau, paub zoo dua rau nws cov chips kev cai. Nws muaj feem ntau tias AMD tus tshiab 7nm Zen 7-based processors yuav raug siv nrog rau 2nm Vega GPU.
Cov no yog cov kab ke Google yuav zoo muab rau cov neeg siv ntawm nws qhov kev pabcuam tshiab gaming Stadia. Yuav tsum tau hais tias lub zog ntawm kev suav ntau heev, tab sis nws yog ib qho tsim nyog los xyuas kom meej qhov ua tau zoo hauv kev ua si. Ntxiv mus, Google npaj yuav muab kev ua si hauv kev daws teeb meem txog 4K ntawm qhov zaus ntawm 60 FPS.
Tau qhov twg los: 3d xov.ru