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Intel Core 2 Extreme QX6700 - neman s četiri glave
02.11.2006.
    « Prev  : Stranica 1 od 8 :  Next »      By ::  Krešimir Matanović 
- Uvod -

Na ovogodišnjem jesenskom IDF-u Intelov predsjednik i CEO Paul Ottelini predstavio je svijetu novu liniju proizvoda - procesore sa četiri jezgre (quad-core). Tada je govorio kako je ova linija procesora, koja je zasnovana na Intelovoj Core mikroarhitekturi namijenjena dvoprocesorskim serverima i high-end desktop PC-ima te će znati maksimalno iskoristiti svaku aplikaciju koja je u mogućnosti raditi sa više threadova paralelno. Iako je takvih aplikacija trenutno puno više za servere, poneke se bojažljivo pojavljuju i za stolne (MS Windows based) PC-e, pogotovo na polju obrade digitalnih fotografija i videa, te 3D modeliranju. Danas je pred nama stolna varijanta procesora s četiri jezgre i došlo je vrijeme da isprobamo koje to današnje aplikacije imaju koristi od ovakvih procesora i da li ih ima dovoljno da opravdaju njegovu nabavku.

core2_extreme_qx6700_up

Core 2 Extreme QX6700

Kodnog imena Kentsfield, ovaj quad-core procesor nije ništa drugo nego spoj dva Conroea pod istom "kapom" . Napravljen je u Intelovom 65nm proizvodnom procesu, pakiranje je FC-PGA 775 i jezgre mu kucaju na 2.66GHz (1066MHz FSB). Defaultni množitelj mu je 10, no on je otključan pa ga možemo mijenjati kako naniže tako i naviše, što nam govori o overclockerskoj naravi ovog procesora. S obzirom da QX6700 predstavlja dva spojena Conroea ima ukupno 8MB (2x4MB) drugostupanjske priručne memorije, te gotovo dvostruko veći TDP (Core 2 Extreme X6800 deklariran je na 75 W), odnosno 130 W, što će reći da trebate dobar hladnjak kako bi ga držali pod kontrolom. Tih 130W TDP-a navodno vrijedi samo za predprodukcijske primjerke, te će tržišne verzje biti deklarirane na 80W, no to nam ostaje za vidjeti. Maksimalni napon pod kojim procesor smije raditi je 1.35V, no kako ćete vidjeti kasnije mi smo ga podvrgli još većem u svrhu ispitivanja krajnih brzinskih granica. Sve tehnologije Intelove Core mikroarhitekture su prisutne i kod Kentsfielda, te ih nećemo dodatno objašnjavati jer je to Denis napravio u članku pod imenom Šaka u oko.

core2_extreme_qx6700_back

Na leđima

Ovakav procesor zahtjeva i adekvatnu platformu pa nam je Intel uz procesor poslao i predprodukcijski primjerak vlastite matične ploče D975XBX2, poznatijoj pod nadimkom "BadAxe2", koja je bazirana na čipsetu i975X. Ova ploča ne također ne skriva svoju overclockersku stranu, a jedina zamjerka ide na pasivno hlađeni northbridge. Raspored ostalih komponenata je identičan prvoj BadAxe ploči. Ploča podržava maksimalnih 8 GB radne memorije na deklariranoj brzini 667 MHz (800 MHz podrška na ovoj ploči nije službena), ima dva PCI-E x16 slota, Intelov High Definition 7.1 audio, Intelovu Matrix Storage tehnologiju, Fast Memory Access tehnologiju itd.

core2_extreme_qx6700_motheboard

Intel D975XBX2 "BadAxe2"

Opcija u BIOS-u ima pregršt, te se sve skupa može lijepo uštimati. Napon procesora (vCore) možemo mijenjati od 1.2875V pa sve do 1.600V. Napon memorije za razliku od prve varijante BadAxe ploče koja je išla od 1.8 - 2.2V (u koracima od 0.1V) ide sve do 2.8V (u koracima od 0.04V) što će zadovoljiti svakoga. Uz ove postavke također možemo mijenjati i napon FSB-a, te napon čipseta.

core2_extreme_qx6700_taskmanager

Windowsi lijepo vide 4 jezgre

Nakon podizanja Windowsa provjerili smo kako oni vide četverojezgreni procesor i u Task Manageru se lijepo vidi trenutno opterećenje svake pojedine jezgre. Screenshot je napravljen tik nakon što je Cinebench 2003 završio svoj posao renderiranja slike te je vidljivo kako su sve četiri jezgre maksimalno odrađivale svoj posao.



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