Pet, 09.05.2008.

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Zotac nForce 750a
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Nvidija pritisnula Ubisoft?
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SP3 za Windows XP službeno dostupan
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450mm waferi 2012. godine
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ZOTAC Cup
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Microsoft odustao od Yahoo!-a
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1.8 ZB podataka do 2011.
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Samsung Electronics objavio rezultate za prvi kvartal
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GF 9800GT u 55nm i 65nm
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OCZ Special Ops Edition DDR3 memorija
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AMD-ova strategija za ponovno osvajanje poslovnog segmenta
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MSI K9A2GM-FD i K9N2VM-FD za AMD Business klasu
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Megatrend novi partner tvrtke TippingPoint
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ASUS Lamborghini VX3
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Super Talent DDR3-1800

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Sapphire Radeon HD3870 512MB Toxic & HD3850 1GB - skupe igračke
27.03.2008.
    « Prev  : Stranica 1 od 6 :  Next »      By ::  Krešimir Matanović 
- Sapphire Radeon HD3870 Toxic -
Toxic model je izveden iz Atomic modela koji je Sapphire proizveo u demonstracijske svrhe Vapor-X tehnologije. S obzirom da se ta tehnologija hlađenja pokazala dobrom, odlučili su ju komercijalizirati i tako je nastao Toxic. GPU na Atomicu je radio na 825MHz a na ovoj je kartici nešto snižen, kao i memorija koja je radila na 1200MHz.

Iako je Atomic kartica dolazila u ekskluzivnom aluminijskom koferu, produkcijski Toxic dolazi u običnijem pakiranju. Kartonska kutija je standardne veličine, a na šarenom oklopu se nalaze svi relevantni podaci o kartici i tehnologijama koje podržava. Sama kartica je smještena u zasebnoj vrećici i dobro zaštićena između dviju spužvi.

Kada pogledamo karticu, najprije ćemo uočiti hladnjak sa crno obojanim plastičnim oklopom na kojem je naziv kartice te naziv tehnologije korištenje za njeno hlađenje - Vapor-X. PCB je plavi, što je standardno za Sapphire, iako je Atomic imao crveni PCB. O RV670 GPU-u koji pogoni ovu karticu je sve već poznato, no ponoviti ćemo neke osnovne informacije. Napravljen je u 55nm proizvodnom procesu, ima "vražjih" 666 milijuna tranzistora, površinu od 190mm2, te 320 shadera i 16 ROP jedinica. Tvornički defaultni takt mu je 777MHz, a na ovom Sapphireu kuca na ravno 800MHz. Memorijsko sučelje je 256-bitno, a na Toxic je ugrađeno 512MB Samsungove (K4U52324QE-BC08 - 0.8ns) GDDR4 memorije koja radi na 1152MHz (2304MHz efektivno), uz propusnost od 76.6GB/s.

Kartica ima dva DVI-I izlaza te jedan TV izlaz. Podržava HDMI, HDCP i Audio (integrirana audio kartica u GPU). Podržana je naravno ATI Avivo HD tehnologija (UVD - hardverska akceleracija reprodukcije Blu-ray i HD DVD sadržaja (VC-1 i H.264)). Također je podržan i CrossfireX, u koji je moguće ukomponirati četiri ovakve kartice. To je potencirano i činjenicom kako je hladnjak Toxica single-slot rješenje, te se CrossFireX polja ovih kartica mogu bez problema slagati i na pločama sa blizu postavljenim PCIe utorima.

Sklop za napajanje je pasivno hlađen jednim aluminijskim hladnjakom, a za rad kartica zahtjeva dodatni 6 pinski PCIe power konektor.

Hladnjak je, kao što smo već spomenuli, single slot rješenje, a kombinira Vapor-X tehnologiju, aluminijske finove te ventilator. Na prvi pogled hladnjak izgleda kao i svaki drugi, no kada ga rastavimo vidljivo je kako je bakrena kontaktna površina VCT (Vapor Chamber Technology) komore puno veća nego kod običnih hladnjaka, te cijela komora funkcionira kao toplovodna cijev. Komora se sastoji od gornje i donje bakrene ploče, između kojih su smješteni kondenzacijski tampon, tampon za isparivanje i transportni tampon. Sistem funkcionira na kružnom principu isparivanja tekućine koja je u dodiru sa izvorom topline, širenju pare komorom, kondenzacijom, transportom pomoću kapilara do izvora topline te ponovnim isparavanjem. Posebnost je i kontrola rada ventilatora. U 2D okruženju ventilator se ne vrti i GPU je hlađen pasivno, kada prijeđemo u 3D način rada ventilator se zavrti, no stvara i nešto veću buku. Na sreću buka nije jako iritantna, no ako gradite tiho računalo sigurno će te zaobići ovaj model. Ujedno, moramo dobro razmisliti i ako gradimo CrossFireX polje, jer ako jedan ventilator dosta čujemo u radu, zamislite kako tek buče četiri.

Bundle je poprilično bogat, a sastoji se od DVI adaptera, HDMI adaptera, CrossFire mostića, HDMI kabela, TV-Out kabela, Molex-PCIe power kabela, zatim CD-a sa driverima i ATi-evim aplikacijama, CD-a sa DVD suite aplikacijama, CD-a sa Power DVD 7 aplikacijom, CD-a sa 3D Mark 06 benchmarkom, Valveovog Black Box kupona i priručnika za korisnike. Sve u svemu odlično.



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