Kod reprodukcije video sadrzaja sirina memorijske magistrale nema skoro nikakvu ulogu. Za tu namenu nVIDIA i ATI imaju PureVideo i UVD respektivno za ubrzavanje reprodukcije video stream-ova.
Bilo koja od dve kartice koje si naveo ce ti super odraditi posao a veruj mi i dosta jeftinije kartice od pomenutih ;-) Treba gledati samo ako je u pitanju ATI koja verzija UVD akceleracije je primenjena.
Citat:
UVD 2
The UVD saw a refresh with the release of the Radeon HD 4000 series products. The UVD 2 features full bitstream decoding of H.264/MPEG-4 AVC, VC-1, as well as MPEG2 video streams, and in addition it also supports dual video stream decoding and Picture-in-Picture mode. This makes UVD2 full BD-Live compliant.
UVD 2.2
The UVD 2.2 features a re-designed local memory interface and enhances the compatibility with MPEG2/H.264/VC-1 videos. However, it was marketed under the same alias as "UVD 2" as the "special core-logic, available in RV770 and RV730 series of GPUs, for hardware decoding of MPEG2, H.264 and VC-1 video with dual-stream decoding". The nature of UVD 2.2 being an incremental update to the UVD 2 can be accounted for this move.
UVD 3
The third generation Unified Video Decoder (UVD3) adds MPEG-4 decoding for DivX and xVid, as well as Blu-Ray 3D [6]
Barts Radeon HD 6800 Series UVD 3
Juniper Radeon HD 5700 Series UVD 2.2
RV770 Radeon HD 4800 Series UVD 2
http://en.wikipedia.org/wiki/Unified_Video_Decoder
http://en.wikipedia.org/wiki/Nvidia_PureVideo
Tako da mozes na nvidia karticama od 4 i od 7 hiljada (GT210/240 imaju navodno istu PV verziju kao sto je i na GTX480 kartici od 500EUR) da imas savrsenu glatku video reprodukciju (makar onoliko koliko ona moze biti).
Ovo je logicno jer je recimo jedan od najbitnijih zahteva HTPC korisnika da imaju glatku reprodukciju videa koje srecemo i na jeftinim low profile karticama.
Nema potrebe da bacas pare na tako skupe kartice osim ako neces i da se poigras malo... :D
make love - !war