AMD, nyob rau hnub ua ntej ntawm lub community launch ntawm Zen 2, tshaj tawm kev ruaj ntseg thiab invulnerability ntawm nws CPUs rau tshiab tawm tsam.

Ntau tshaj li ib xyoos tom qab qhov kev tshawb pom ntawm Spectre thiab Meltdown, lub lag luam processor tau nyob rau hauv kev npau taws nrog kev tshawb pom ntawm ntau thiab ntau qhov tsis zoo uas cuam tshuam nrog kev xam pom. Feem ntau raug rau lawv suav nrog kawg ZombieLoad, tau dhau los ua Intel chips. Tau kawg, AMD tsis ua tsis tau qhov zoo ntawm qhov no los ntawm kev tsom mus rau kev ruaj ntseg ntawm nws cov CPUs.

rau nplooj ntawv, mob siab rau Spectre-zoo li qhov tsis zoo, lub tuam txhab tau hais tias: "Ntawm AMD, peb tsim peb cov khoom thiab cov kev pabcuam nrog kev ruaj ntseg hauv siab. Raws li peb cov kev soj ntsuam sab hauv thiab kev sib tham nrog cov kws tshawb fawb txog kev ruaj ntseg, peb ntseeg tias peb cov khoom tsis raug rau kev tawm tsam. Fallout, RIDL los yog ZombieLoad vim muaj kev ruaj ntseg kho vajtse kuaj hauv peb cov architecture. Peb tsis tuaj yeem rov ua dua qhov tsis zoo no ntawm AMD cov khoom lag luam thiab tsis muaj pov thawj tias lwm tus neeg tau ua tiav qhov no. " AMD CPUs tau tshaj tawm tias Invulnerable rau Lwm Qhov Kev Tawm Tsam MDS - Khw-rau-Leak Forwarding.

Raws li qhov tshwm sim ntawm kev tshawb pom ntawm ntau thiab ntau qhov tsis zoo tshiab thiab qhov xav tau rau cov tuam txhab tsim kho qhov tsim nyog rau lawv, AMD processors yuav dhau los ua kom muaj txiaj ntsig ntau dua li kev sib tw daws teeb meem, raws li tsab ntawv tshaj tawm tsis ntev los no. kev tshawb nrhiav, ua los ntawm Phoronix lub vev xaib, siv tag nrho cov kev txhim kho rau cov txheej txheem ntawm cov txheej txheem kev ua haujlwm tsis zoo cuam tshuam nrog kev kwv yees ua rau txo qis hauv Intel CPU kev ua tau zoo los ntawm qhov nruab nrab ntawm 16% (nrog Hyper-Threading neeg xiam - los ntawm 25%). Nyob rau hauv rooj plaub ntawm AMD Zen + processors, kev ua tau zoo nyob rau hauv tib yam kev mob poob los ntawm tsuas yog 3%.

Tsis zoo: Apple thiab Google qhia Intel cov neeg siv yuav tsum lov tes taw Hyper-Threading, uas qee zaum tuaj yeem txo qhov kev ua tau zoo txog li 40-50% (nyob ntawm txoj haujlwm). Intel nws tus kheej xav kom tsis txhob ua qhov no Feem ntau, tab sis qhov teeb meem tuaj yeem yog qhov tseem ceeb tshwj xeeb rau cov chaw ua haujlwm, cov servers thiab lwm yam kev ua haujlwm thiab kev nyab xeeb rhiab qhov chaw. Nyob rau hauv rooj plaub ntawm AMD chips, disabling qhov zoo sib xws Simultaneous Multi-Threading technology tsis tas yuav tsum tau. Tsis tas li ntawd, dej nyab ntawm xov xwm hais txog qhov tsis zoo, nrog rau cov ntaub ntawv hais txog Intel qhov kev sim zais cov ntaub ntawv los ntawm pej xeem tsis tuaj yeem tab sis cuam tshuam cov duab tom kawg.

Cov xov xwm no los ntawm lub sijhawm tsis zoo rau Intel: AMD tab tom yuav tso tsev neeg ntawm 7nm CPUs siab heev nrog Zen 2 architecture rau desktop thiab server workloads. Lub caij no, Intel tseem siv cov qub qub (los ntawm qhov pom ntawm kev tsim cov txheej txheem thev naus laus zis) 14-nm thev naus laus zis thiab tsis tuaj yeem tso tawm huab hwm coj luam tawm ntawm 10-nm chips. Tag nrho cov no ua si rau hauv txhais tes ntawm AMD, uas yuav zoo li yuav nce ntxiv rau nws txoj kev lag luam raws li qhov tshwm sim.

Tau qhov twg los: 3d xov.ru