Sub, 11.02.2012.

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Lenovo objavio financijske rezultate
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Intel Solid-State Drive 520
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G.Skill Ares
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Emilio Ghilardi odlazi iz AMD-a
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ASUS DRW-24B5ST
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AMD Financial Analyst Day
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Otvoren prvi Lenovo Exclusive Store u Hrvatskoj
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Shuttle XPC Barebone SZ68R5
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AMD Radeon HD7950
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Na tržištu novi Core i5 desktop i Celeron mobilni procesori
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ASUS HD 7970 DirectCU II
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Bill Gates uručio stipendije hrvatskim studentima
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AIDA64 v2.20
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Nikad slabija prodaja Atoma
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AMD Opteron 6200 serija osvaja nagrade

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Intel Pentium 4 "Prescott" - Vrući kamen spoticanja
15.02.2004.
    « Prev  : Stranica 3 od 11 :  Next »      By ::  Ozren Žagmešter 
- Tranzistori mirno! -

Svi ovi dodaci donijeli su porast broja tranzistora s 55 milijuna (Northwood) na 125 milijuna! Ogroman porast s obzirom da je većina stvari dodana da se smanji negativan utjecaj dužeg pipelinea. Ipak, rast je toliko velik da se nama čini da Intel nije priznao što je sve promijenio i da se ispod haube nalazi još solidan broj dodataka zbog kojih je broj tranzistora tako velik. Isto tako, imamo feeling da su ti ostali dodaci isključeni, kao što je bio slučaj s HT-om dok se nije pojavio model na 3.06GHz-a. Ono što je dobro za Intel (i profitabilnost) jest to da je veličina jezgre samo 112mm2.

Prescott
Northwood
Extreme
Edition
Athlon 64 FX
Athlon 64
AthlonXP
Socket
Socket478
Socket478
Socket478
Socket940
Socket754
SocketA
Frekva
2.8-3.4GHz
1.6-3.4GHz
3.2-3.4GHz
2.2GHz
2-2.4GHz
do 2.2GHz
Tehnologija
0.09 mikronska "strained" silicon
0.13 mikronska
0.13 mikronska
0.13 mikronska, SOI
0.13 mikronska, SOI
0.13 mikronska
Broj tranzistora
125 mil.
55 mil.
178 mil.
105.9 mil.
105.9 mil.
54.3 mil.
Veličina jezgre
112mm2
131mm2
237mm2
193mm2
193mm2
101mm2
L1 data cache
16KB
8KB
8KB
64KB
64KB
64KB
L1 instrukcijski cache
12000 uops
12000 uops
12000 uops
64KB
64KB
64KB
L2 cache
1024KB
512KB
512KB
1024KB
1024/512KB
512KB
L3 cache
-
-
2MB
-
-
-
x86-64
-
-
-
+
+
-
SIMD instrukcije
SSE3/SSE2/ SSE
SSE2/ SSE
SSE2/ SSE
SSE2/ SSE/ 3DNow!
SSE2/ SSE/ 3DNow!
SSE/ 3DNow!
Integrirani memorijski kontroler
-
-
-
Dual channel DDR
Single channel DDR
-

Jezgre

Što se tiče kompatibilnosti s postojećim pločama, prevelikih problema nebi trebalo biti, tj. novi BIOS bi trebao riješiti sve probleme. Ovo se odnosi na vlasnike ploča na bazi novijih chipseta poput 848P, 865PE, 875P, SiS655FX i sl. Vlasnici starijih ploča nemaju što očajavati jer se tako i tako trenutno kupovina Prescotta ne isplati - kao što ćete vidjeti iz naših testova, na istoj frekvenciji Northwood je i dalje brži! Ono što je zanimljivo jest da smo u jednom trenutku primili informaciju da samo najnovije Socket478 ploče (one napravljene u posljednjih mjesec-dva) podržavaju Prescott kako treba te da samo one mogu iskoristiti poboljšani HT. Nama to zvuči kao teška "patka" jer ne vidimo što se ploča ima petljati u to kako procesor radi u HT modu. Mi smo Prescott upiknuli u više raznih ploča i na većini je radio. Ploča na kojoj nije radio bila je upravo Intel i875P ploča ranije revizije... Na nekim pločama je uporno radio na 2.8GHz a ne na 3.2GHz. Kako se radilo o inžinjerskom procesoru s otključanim množiteljem, ne čudi takva pojava jer se neki proizvođači matičnih ne uzbuđuju da li takvi (ultra-rijetki) primjerci rade kako treba na njihovim pločama ili ne.



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