Chng hn théo hnh minh há trn, lntel gii thiu b x l Nehalem 4 li (quad-core) vi b m cache L3, b iu khin b nh tch hp DDR3 v ng kt ni tc cao QPI knh n.Bi Tn Vit: To CD USB c tnh nng Hirens boot, Ghost boot, ci t HH Windows.CPU c th c xem nh no b, mt trong nhng phn t ct li nht ca my vi tnh.
N l mt mch tch hp phc tp gm hng triu transitor trn mt bng mch nh. CPU l linh kin quyt nh n tc ca my tnh, tc x l ca CPU c tnh bng MHz hoc GHz. Hai hng sn xut CPU ln hin nay l Intel v AMD, ngoi ra cn c mt s hng cnh tranh nh VIA, Cyrix, Nexgen, Motorola. Nh v d hnh di y th CPU c 12 ng truyn d liu ( ta gi rng Data Bus l 12 bit ), hin nay trong cc CPU u c rng Data Bus l 64 bit. Minh ho bn trong CPU c 12 ng truyn d liu gi l Data Bus c 12 bit. Tng t nh vy th rng Bus a ch ( Add Bus ) cng l s ng dy truyn cc thng tin v a ch. Gi s: Nu s ng a ch l 8 ng th CPU s qun l c 28 256 a ch Hin nay trong cc CPU c 64 bt a ch v nh vy chng qun l c 264 a ch nh. L tc d liu ra vo cc chn ca CPU - cn gi l Bus pha trc: Front Site Bus(FSB). B nh Cache l b nh nm bn trong ca CPU, n c tc truy cp d liu theo kp tc xa l ca CPU, iu ny khin cho CPU trong lc x l khng phi ch d liu t RAM v d liu t RAM phi i qua Bus ca h thng nn mt nhiu thi gian. Mt d liu trc khi c x l, thng qua cc lnh gi ca ngn ng lp trnh, d liu c np sn ln b nh Cache, v vy khi x l n, CPU khng mt thi gian ch i. Khi x l xong trong lc ng truyn cn bn th CPU li a tm kt qu vo b nh Cache, nh vy CPU khng mt thi gian ch ng truyn c gii phng. B nh Cache l gii php lm cho CPU c iu kin hot ng thng xuyn m khng phi ngt qung ch d liu, v vy nh c b nh Cache m hiu qu x l tng ln rt nhiu, tuy nhin b nh Cache c lm bng Ram tnh do vy gi thnh ca chng rt cao. ALU ( Arithmetic Logic Unit ): n v s hc logic: Khi ny thc hin cc php tnh s hc v logic c bn trn c s cc d liu. Control Unit: Khi ny chuyn to ra cc lnh iu khin nh iu khin ghi hay c vv. CPU hot ng hon ton ph thuc vo cc m lnh, m lnh l tn hiu s dng 0,1 c dch ra t cc cu lnh lp trnh, nh vy CPU s khng lm g c nu khng c cc cu lnh hng dn. Khi chng ta chy mt chng trnh th cc ch lnh ca chng trnh c np ln b nh Ram, cc ch lnh ny c dch thnh ngn ng my v thng tr trn cc ngn nh ca Ram dng 0,1. Trong qu trnh c v thc hin cc ch lnh, cc b gii m s gii m cc ch lnh ny thnh cc tn hiu iu khin. Nehalem l b vi x l c cu hnh t 2 li (Dual-cores) n 8 li (8-cores), v b vi x l Nehalem u tin dnh cho th trng s c thit k 4 li (Quad-cores). Ngoi ra Nehalem cn c nhng c im mi khc rt n tng nh b iu khin khin b nh tch hp, ng kt ni mi tc cao QuickPath, b m mi Cache L3 v cng ngh qun l in nng cho tt c cc li. Thit k NehaIem c minh há hnh trn: mi li (Coré) x I c b m caché L1 v L2 ca ring n, nhng chia s chung b m cp 3 cache L3 cho tt c cc li. C th nh sau: Dung lng b m cache L1 cho mi li l 32KB - tng nh cc b vi x l da trn kin trc Core hin nay.
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