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Gigabyte Radeon HD5750 & Sapphire Radeon HD5750 VaporX ili kako radi najjeftiniji DX11 Crossfire?
18.12.2009.
    « Prev  : Stranica 2 od 6 :  Next »      By ::  Krešimir Matanović 
- Sapphire Radeon HD5750 VaporX 1GB -

Sapphireova kartica se odmah na vanjskom omotu pakiranja diči svim tehnologijama koje podržava, te onime što će vjerojatno najprije privući kupce - besplatnom igrom. I to ne bilo kojom, Colin McRae DIRT 2 je tek ovaj mjesec izašla na tržište a diči se DirectX 11 podrškom. Uz igru u pakiranju će te još naći i CD sa upravljačkim programima i aplikacijama, CD sa ArcSoftovim SimHD Plug-in-om (koristi se za upscaling video materijala standardne i DVD kvalitete na kvalitetu blisku HD-u), upute za korištenje, VGA-HDMI i Molex-PCIe Power adapteri te CrossFire mostić. Sapphire u svakom slučaju zna kako privući kupca.

Jedna od posebnosti ove kartice je i korištenje Vapor-X hladnjaka. Sapphire se i dodatno potrudio dizajnirati plastični pokrov hladnjaka te je kartica svakako znatno atraktivnija od Gigabyteove. Dodatan čar donosi i svjetleći Sapphireov logo na gornjem dijelu plastičnog pokrova. PCB je skoro identičan onome Gigabyteovom, a tek kada se dobro zagledamo možemo uočiti neke razlike. Nije od presudnog značaja, no tako smo uočili da Gigabyte koristi sve Solid State kondenzatore, dok Sapphire ima dva elektrolitska.

Zbog činjenice da koristi napredniji rashladni sistem, Sappire se odlučio za laganu korekciju frekvencije Junipera pa je tako on za gotovo zanemarivih 10MHz brži od onoga na Gigabyteovom modelu i kuca na 710MHz. Hynixovi memorijski čipovi također rade na svega 10MHz višem taktu - 1160MHz (4.64Gbps). Zbog toga i memorijska propusnost raste na 74.2GB/s. Zbog toga je i potrošnja mrvicu veća - prema našim mjerenjima u maksimali i do 6W. Ostatak kartice je identičan Gigabytovom modelu.

O Sapphireovoj Vapor-X tehnologiji smo već nekoliko puta pisali. Kontaktna bakrena površina VCT (Vapor Chamber Technology) komore je puno veća nego kod običnih hladnjaka, a cijela komora funkcionira kao toplovodna cijev. Komora se sastoji od gornje i donje bakrene ploče, izmedu kojih su smješteni kondenzacijski, isparni 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. Ova tehnologija u kombinaciji sa klasičnim aluminijskim hladnjakom i ventilatorom bi trebala biti vrlo učinkovita, a koliko zapravo vidjeti ćemo iz testova zagrijavanja i overclockinga. Kao i kod Gigabytea, i tu su ukupno četiri video izlaza (konektora) - dva DVI-I, jedan HDMI i jedan DisplayPort. I sve ostalo, tj. podrška za DX11, Eyefinity, UVD 2.0 itd. je naravno tu.



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