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Sapphire ATI Radeon X1800 XT PE
26.01.2006.
    « Prev  : Stranica 1 od 8 :  Next »      By ::  Igor Vujević 
- Uvod -
Nakon izlaska nVidia 7800GTX kartice s 512MB memorije, ATI je nekim svojim partnerima dao dozvolu za proizvodnju nove revizije X1800 XT kartica s povišenim radnim taktom memorije i procesora. Sapphire, najveći ATI-jev partner u proizvodnji grafičkih kartica je, dakako, bio jedan od prvih proizvođača koji su nove kartice isporučili na tržište. Sapphireova poboljšana verzija Radeona X1800XT tako nosi sufiks PE, no on, kao često dosada, ne znači "Platinum Edition" već "Performance Edition". S obzirom da je cijena ove kartice tek neznatno viša od standardne verzije, provjerili smo u čemu se ova zvjerka razlikuje od standarde X1800XT kartice, te isplati li se razlika u cijeni između ova dva modela.

Sapphire ATI Radeon X1800XT PE 512

Nenametljiva kutija skriva opaku zvijer visoke cijene, pa smo dojma da se Sapphire mogao malo više potruditi oko dizajna i atraktivnosti samog pakiranja. Iako nemamo posebnih zamjerki na izvedbu i kvalitetu, s obzirom na cijenu i status PE modela očekivali smo ipak nešto malo atraktivnije od klasične kutije s par sličica. No, da ne cjepidlačimo, primarna namjena je ispunjena - kartica će pronaći svoj put do korisnika neozlijeđena, zajedno s pripadajućim bundleom. Nakon raspakiravanja kutije, ruke automatski guraju sadržaj kutije na stranu i grabe komad hardvera koji se svojom težinom približava mnogo masivnijim komadima računalne opreme. No dobro, za tu cijenu i očekujemo nešto što može donijeti fizičku bol potencijalnom kradljivcu-:)

Sapphire-ova X1800XT PE PCI-e grafička kartica dijeli s referentnim modelom istu arhitekturu, obje dolaze opremljene s 512MB GDDR3 memorije, hladnjak je identičan na obje verzije te jedine razlike pronalazimo u radnom taktu. Ova razlika u taktu dolazi do izražaja samo u 3D okružju, gdje kartica preko posebne opcije u CCC (Overdrive) povećava radni takt jezgre i memorije. Podrška za DirectX 9 i Shader Model 3.0, uz ostale značajke X1000 serije ima svoje očekivano mjesto i na ovoj kartici. Da ne duljimo, u priloženoj tablici su navedene glavne karakteristike obje kartice.

Model

Pixel Pipelines
Vertex shaders
Memory Type
Memory Bus
GPU speed
Memory speed
ATI X1800XT 512
16
8
GDDR3
256-bit
625MHz
1500MHz DDR
Sapphire X1800XT 512 PE
16
8
GDDR3
256-bit
700MHz
1600MHz DDR

Osnovne karakteristike kartica

Malo gore, malo dolje

Dok se pred ovu karticu ne postave zahtjevi za rad u 3D okruženju ona radi na nešto nižim taktovima u odnosu na referentni model. Drugim riječima, radni taktovi su 600 MHz za jezgru i 1400 MHz DDR-a za memoriju. Tek ulaskom u 3D okolinu radni taktovi preko već spomenute opcije "Overdirve" dosežu svoj maksimalan takt od 700/1600 MHz DDR.



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