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ATI Radeon HD5870 - neukroćena zvijer
23.09.2009.
    « Prev  : Stranica 2 od 6 :  Next »      By ::  Krešimir Matanović 
- Radeon HD5870 -

Dizajn HD5870 kartice se razlikuje od svega od sada viđenog od strane AMD-a, a ponekim detaljima su uspjeli napraviti ovu karticu i zanimljivom. Kada ju usporedimo sa HD4870X2 i GTX285 vidimo kako im se približila u dimenzijama, a čak i nadmašila. Velika je to razlika u odnosu na prethodnu generaciju i baš nas zanima kako će izgledati X2 model kada jednom izađe.

GPU kao što vidimo kuca na 850MHz, a 1024MB GDDR5 memorije na 1200MHz (4.8Gbps). U stanju mirovanja ovi taktovi se spuštaju na 150MHz za GPU, te 300MHz za memoriju koja se smanjenjem signalinga predacuje u GDDR3 način rada. Kao što GPU-Z kaže teoretski maksimalni Pixel Fillrate je 27.2 GPiksela/s, dok je Fillrate tekstura 68 GTexela/s. Memorijsko sučelje je 256-bitno baš kao i na prethodnom modelu, a propusnost je 153.6GB/s.

Kao što smo rekli, karticu "krasi" nekoliko dizajnerskih detalja koji razbijaju monotonost crnog oklopa u koji je smještena. Vjerujemo kako ćemo ubrzo ugledati i neke nove dizajne hladnjaka kod pojedinih vendora. Sučelje za komunikaciju sa matičnom pločom je naravno PCIe x16 standarda 2.0, a i podrška za CrossFireX je tu. Korištenje ove kartice u CF-u će vjerojatno biti zanimljivo tek entuzijsatima dubljeg džepa koji si mogu priuštiti igranje na npr. 6 30" monitora. Kada je riječ o naponskim potrebama, njih osim preko 75W PCIe sučelja zadovoljavaju i dva 6-pinska PCIe power konektora. Vršna potrošnja je kao što smo vidjeli nešto viša nego na prethodnoj generaciji što je i očekivano za masivniji RV870 čip.

S obzirom da kartica nije naša, i nakon nas je trebala otići u još nekoliko redakcija nismo ju otvarali. Učiniti ćemo to prvom prilikom jer vjerujemo kako sve zanima konstrukcija hladnjaka i layout komponenata na PCB-u. Ova tvornička izvedba ima četiri izlazna konektora - dva DVI-I, jedan HDMI i jedan DisplayPort. Mogućnosti spajanja više monitora su dakle velike a niti to nažalost zbog kratkoće vremena nismo uspjeli isprobati. Poboljšanja video mogućnosti nove kartice uključuju i UVD2 koji donosi hardversko ubrzanje dekodiranja dvostrukog 1080p HD videa, zatim Video Gammu (neovisnu o Windows desktopu), svjetliju bijelu boju (Blue Strech procesing), te dinamički video opseg (kontrola nivoa crne i bijele poje tijekom reprodukcije). Kartica donosi i podršku za HDMI 1.3a (Dolby TrueHD& DTS-HD Master Audio), punu podršku za Blu-Ray audio formate (Dolby TrueHD, DTS-HD Master Audio, AC-3 i DTS) te 8 kanalni 192kHz / 24-bitni audio.



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