Niaj hnub no peb saib cov latency ntawm lub cim xeeb. Yuav ua li cas yog nws thiab yog vim li cas no yam ntxwv uas yuav tsum tau nyob rau hauv computer technology? Qhov uas nws pom nws siv? Yuav ua li cas mus cuag qhov zoo tshaj plaws nqi ntawm no cov yam ntxwv?
Hais txog RAM
Yog li ntawd peb hu rau ib tug tshwj xeeb ntaus ntawv, uas muaj cov ntaub ntawv thiab ua khiav thaum lub computer muaj dab. Vim cov kev ceev ntawm qhov kev txiav txim, nws ua raws li ib tug intermediary ntawm cov ntaub ntawv nyob rau ntawm koj hard disk, thiab processor. Qhov tseem to taub feem ntau cov neeg cov yam ntxwv yog tus nqi ntawm cov RAM. Nyob rau hauv cov ntaub ntawv no, khiav txoj cai yog tias tus ntev nws yog, qhov zoo dua rau peb. Nyob rau hauv qhov tseeb txoj cai tam sim no siv lub Internet, saib movies thiab ua hauj lwm nrog rau feem ntau ntawm pab kev pab cuam uas ploj lawm 2 GB. Tab sis rau cov kev ua tau zoo kev ntsuam xyuas yog siv, thiab ib tug xov tooj ntawm lwm yam tsis, xws li zaus. Nws qhia ntau npaum li cas cov ntaub ntawv yuav tau kis tshaj lub tsheb npav ib chav tsev lub sij hawm. Qhov loj qhov zaus, ntau dua cov ntaub ntawv tus nqi. Tab sis yuav tsum paub hais tias nws yog kuj txaus siab los ntawm lub CPU thiab motherboard. Los yog cia wb mus lwm cov kev xaiv, tsis yog li ntawd zoo-paub - latency. Yog li ntawd hu ua lub sij hawm ncua ntawm Pib ntsais koj teeb uas los ntawm lub random nkag nco. Cov tsawg kawm computer yuav khiav, qhov zoo tshaj plaws tshwm sim nyob rau hauv cov nqe lus ntawm efficiency nyob rau hauv lub ntev mus dhia tig tawm.
nta latency
Nyob rau hauv lub yav dhau los cov pawg lus, ib tug tseem ceeb lub sij hawm ntawd tau ploj lawm. Ua ke nrog cov zaus nqi RAM nce thiab latency RAM. Yuav ua li cas zoo dua ces mus rau nqe? Yuav ua li cas mus xaiv ntau dua los yog tsawg universal ntsuas? Xam tias yog pom siv ntawm ob peb lub cim xeeb qauv. Yog li ntawd, yog hais tias muaj yog ob tug, thiab lawv khiav lag luam nyob rau hauv dual-channel hom, cov ntaub ntawv hloov lwm lub tsev ceev yuav tau nce. Ua li no, siv lub Rooj Tswjhwm Saib yuav tsum tau ntsia tau rau hauv tej yam slots (uas yog feem ntau yog sau ua ke nrog ib tug xim). Ntawm no yog ib tug feature: yog tsis tsim nyog hais tias lawv muaj tus nqi qub kev nco. Tab sis, nrog rau kev hwm rau zaus, nws yog ntshaw qhov no mus yuav tau ib tug ua tiav coincidence. Txwv tsis pub lawv yuav ua hauj lwm nrog tus nqi qis tshaj tus nqi ntawm lub ob.
Yuav ua li cas yog nco latency
Ib me ntsis kev tshawb xav. Yog li ntawd hu ua summation yog nqa tawm siv ib tug tshwj xeeb coefficient unmanaged rov qab currents ntawm transistors uas muaj nyob rau hauv txhua txoj kab ntawm lub cim xeeb nti siv, thiab lub sij hawm ntawm switching. Nws kuj zoo li nyuab, tab sis nws yog ib tug cuav assumption. Yog li, lub latency nyob rau lub zaus uas tej daim ua hauj lwm. Lub interesting tshaj plaws yog hais tias nws tsis yog proportionate. Nyob rau hauv lwm yam lus: cov sab lub latency, qhov zoo rau cov neeg siv. Cia saib ib qho piv txwv. Peb xav kom peb muaj peb hypothetical computer nco yog qhov luaj li cas ntawm ob gigabytes. Peb yuav muab tso rau ib kab, uas yuav muab rau peb 2 GB. Tab sis qhov no yog tsis yog qhov zoo tshaj plaws txoj kev. Nyob rau hauv cov ntaub ntawv no, nws yog ib qhov zoo tshaj plaws rau nruab plaub kab, txhua yam uas 512 MB. Nws yuav tsum tau siv sij hawm mus rau hauv tus account lub tej yam uas cov motherboard, thiab tej yam ntawm RAM siv. Module teeb rau lub hauv paus ntawm lub tib lub technology, yuav tsis tau muab tso nyob rau hauv qhov chaw uas yog tsim los rau ib tug txawv technology. Qhov no yog ua nyob rau hauv thiaj li yuav tiv thaiv kom txhob puas tsuaj thaum lub sij hawm kev lag luam mechanism xws unintended tej yam kev mob.
los
Yog hais tias koj twb puas tau ntsia lub ntaus ntawv, koj yuav pom ib yam dab tsi uas zoo sib xws yog cov nram no: "Tus latency RAM: CL9". Ua li cas nws txhais li cas? Qhov no xam qhia cov kev ncua sij hawm uas muaj tshwm sim ntawm cov pib xa kem chaw nyob nyob rau hauv lub cim xeeb thiab, ntsig txog, lub cov ntaub ntawv hloov lwm lub tsev. Cov uas muaj qhia tus nqi tsim nyog rau cov pib ntawm tus txheej txheem. Tus me nws yog, qhov zoo rau peb. Yog li ntawd nws yog ib txwm tsim nyog los xav txog qhov no tus nqi thaum xaiv nco.
hom ntawm pab kiag li lawm
Opportunity rau kev sib cais siv ob cov ntaub ntawv tus nqi (DDR), uas muaj peev xwm muab txhais raws li ib tug muab ob npaug rau cov ntaub ntawv tus nqi. Lub earliest piv txwv ntawm no technology muaj 184 hu rau. Lawv tus qauv voltage yog 2.5 V. fetches cov ntaub ntawv ntawm 2 khoom ib lub voj voog. Tab sis nyob rau hauv peb lub sij hawm, lawv yuav muab xam obsolete thiab yog tam sim no zoo qhov twg thiab nyob rau hauv txhua yam siv. Ntau niaj hnub thiab yog suav hais tias yog feem ntau DDR2. Nws tso cai rau koj los mus xaiv tus muaj txoj cai 4 khoom ib moos voj voog. Lub module yog tsim raws li ib tug luam Circuit Court board, uas muaj 240 pins (120 nyob rau hauv txhua cov kev taw qhia). Tus txheem mov voltage rau 1.8V nws yog suav tias yog tus tshiab DDR3. Nws rau ib kauj ruam yuav ua rau ib tug xaiv nyob rau hauv lub 8 cov ntaub ntawv me me. Nws kuj ua rau hauv Circuit Court board, uas muaj 230 pins. Tab sis tus txheej txheem mov voltage nyob rau hauv cov ntaub ntawv no tsuas yog 1.5 V. Tseem muaj ntau tshaj thiab DDR4, tab sis qhov no tshiab technology, uas yog tseem nyuaj heev kom tau raws li.
muaj peev xwm
Twb peb ua tiav ib tsab xov xwm hais txog cov latency ntawm lub cim xeeb. Ua li cas tau yav tas los qhia, nws yog txaus kom to taub lub ib thooj ntawm cov ntaub ntawv nyob rau hauv lub OP. Thiab lub finishing kov - bandwidth. Yog li ntawd, hom phiaj, los ntawm lub cim xeeb tau tus nqi ntawm no feature yuav tsum phim qhov loj ntawm lub processor parameter. Xav txog lo lus nug no, xav hais tias peb tau yav tas hais dual-channel hom. Peb muaj ib tug processor uas muaj peev xwm - 10.600 MB / s. Tom qab ntawd peb yuav tau teem lub RAM module, tus yam ntxwv uas yuav tsum 5,300 MB / s. Nyob rau hauv tandem, lawv yuav muab cov nyiaj tib bandwidth. Tab sis tsis txhob hnov qab tias cov modules yuav tsum yuav ntawm tib zaus. Thiab qhov zoo tshaj plaws yog hais tias lawv kuj muaj tib volume, lawv ua ib chaw tsim tshuaj paus thiab lawv yog ua nyob rau hauv ib batch. Ces lub cim xeeb latency yuav yuav qhov tsawg kawg nkaus tau tus nqi. Yog hais tias peb tham txog dual-channel hom, nws rau cov txheej xwm muag khoom. Yog li ntawd-hu ua tshwj xeeb poob lawm uas optimized rau cov hauj lwm lawm. Nws yuav tsum tau muab sau tseg tias nws yog tau siv lub cim xeeb thiab nws bandwidth yog siab tshaj nyob rau hauv lub processor. Tab sis latency yog tsis yig cuam tshuam, txawm hais tias qhov txawv yog ib tug ntau yam ntawm.
xaus
Raws li koj tau pom, lub latency ntawm lub cim xeeb - qhov no yog ib tug tseem ceeb heev yam ntxwv. Tshwj xeeb yog pleasing yog lub fact tias nws muaj peev xwm cuam tshuam tsis tsuas cov kev kho vajtse sab, tab sis kuj tos tus configuration rau koj lub computer. Tab sis nws yog tseem tsim nyog los kom nws nyob rau hauv ib tsim nyog thiab ntau tshaj quad hom tsis ua hauj lwm. Tsis yog, ntawm chav kawm, yog koj xav, koj muaj peev xwm thiab nrog lub cim xeeb phaib 512 MB los tsim kom tau ib lub computer uas yuav khav ib tug kev ceev ntawm 8 GB. Tab sis cov hauj lwm zoo ntawm xws li ib tug txav yuav es dubious. Nws yog zoo dua nyob twj ywm nyob rau hauv cov ntaub ntawv no 4 boards, txhua tus uas yuav muaj 2 GB.