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Zotac GeForce 9800GTX - najnoviji G92
01.04.2008.
    « Prev  : Stranica 1 od 5 :  Next »      By ::  Krešimir Matanović 
- Uvod i opis -
U zadnjih par mjeseci se nikako ne možemo riješiti kartica sa G92 čipovima (i njihovim varijantama), samo dolaze. Nvidija je očito pošteno odlučila reciklirati ovaj čip, pa se tako protegao i kroz dvije serije kartica - 8xxx i 9xxx. No bilo kako bilo najnovija revizija je pred nama - G92-420, pa bi ju bio red i predstaviti. Iz Zotaca smo dobili 9800GTX karticu koju pogoni taj G92 GPU, a ima Nvidijin referentni dizajn - kako PCB-a tako i hladnjaka. Isto tako referentni su i taktovi. Od modela kojeg nasljeđuje, tj. 8800GTX-a se dosta razlikuje, no o tome nešto kasnije. Inače, službeni launch 9800GTX kartice je danas, a mi vam među prvima donosimo njen test.

Zotac je omot kutije obojao svojom zaštitnom bojom i na njega postavio sve podatke relevantne kupcima. Zanimljivo je vidjeti 16+ oznaku na kutiji, no ne brinite to je samo za priloženu igru LOST, karticu možete koristiti svi. Unutar kutije je 9800GTX smještena u pjenasti oklop koji ju dobro štiti od menahičkih oštećenja.

Sama kartica je poprilično duga (26,67cm) i uvelike nadmašuje širinu ATX ploče, te će vam trebati široko/duboko kućište kako bi ju udobno smjestili. G92-420 je posljednja revizija čipa koji je napravljen u 65nm proizvodnom procesu, a ima 754 milijuna tranzistora, te 128 stream procesora, . GPU kuca na 675MHz, a shaderi na 1688MHz. Na karticu je ugrađeno 512MB Samsungove GDDR3 memorije (K4J52320E 0J08 - 0.8ms) koja radi na 1100MHz, odnosno 2200MHz efektivno preko 256-bitne sabirnice. Teoretska propusnost je 43.2 Gbps. Model koji nasljeđuje, tj. 8800GTX je pogonio G80 čip sa 681 milijun tranzistora. GPU je radio na 575MHz, a shaderi na 1350MHz. Na referentnu karticu je bilo ugrađeno 784MB radne memorije koja je radila na 900MHz (1800MHz efektivno) preko 384-bitne sabirnice. Dakle razlika je velika.

Kartica ima dva DVI-I izlaza, te jedan TV-izlaz (HDTV). Novost je LE dioda pored ispuha za zrak koja signalizira funkcionalnost kartice. Tu je i podrška za HDCP, a HDMI je podržan preko HDMI-DVI adaptera i SPDIF audio konektora na PCB-u kartice (konektor se nalazi na vrhu kartice malo dalje od SLI konektora). kad smo kod SLI-a, kartica ima podršku za 3-way no ne i za Quad SLI. Nove funkcionalnosti Pure Videa HD su također podržane kao i na ostalim karticama serije 9.

Za napajanje ove kartice osim PCIe slota se brinu i dva 6-pinska PCIe power konektora koje je potrebno prilkjučiti na dva utora koja su smještena na vrhu kartice. Maksimalni TDP 9800GTX-a je 160W. Nvidija preporuča 450W napajanje koje je u mogućnosti isporučiti 24A na 12V railu za jedni karticu, 750W za dvije i naposlijetku 1000W PSU za tri kartice. Mi smo koristili odličan Antecov TruePower Quattro 850W tako da bojazni od nedostataka struje nije bilo.

Sistem napajanja kartice zauzima popriličnu površinu kartice, a na GPU-u vidimo kako je proizveden u 7. tjednu 2008. godine. Iako revizija čipa za 9800GX2 karticu nosi oznaku G92-450-A2, a za ovu G92-420-A2 ne dajte da vas viša oznaka zavara - ovo je noviji čip. Shodno tome smo se nadali kako je i ispeglaniji te da će se dati dobro overclockati.

Hlađenje kartice je vrlo masivno i kompleksno. Za skidanje hladnjaka sa kartice potrebno je ukloniti čak 19 vijaka. Kako bi dodatno izvadili hladnjak sa ventilatorom iz plastičnog oklopa potrebno je ukloniti još pet vijaka. Hladnjak je pretežno napravljen od aluminija uz kombinaciju toplovodnih cijevi i bakrene jezgre koja služi kao kontaktna površina sa GPU-om. Na svaki memorijski čip se također naslanja dio hladnjaka, kao i na dijelove sklopa za napajanje. Deltin ventilator nosi ime BFB 1012L i identičan je onome koji se ugrađuje i na 8800Ultra i GTS modele. Postavljen je pod blagim kutom i prilično je tih u radu. Na defaultnoj brzini ventilatora se čitava kartica poprilično zagrijava pod opterećenjem. Čim preuzmemo kontrolu nad brzinom vrtnje i postavimo ga na više okretaje kartica se bolje hladi no i više buči - pogotovo na 100% vrijednosti.

Bundle kartice je solidan a uključuje dva Molex-PCIe power kabela, SPDIF kabel, S-Video - Composite kabel, DVI-VGA adapter i DVI-HDMI adapter. Uz to dolaze i korisničke upute za rad, CD sa driverima i igra LOST.



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