'tis backordered. Prolly bogus.
sm8000, if the CPU lacks at least SSE2 then no GPU will help with DxVA of AVC and VC-1. Otherwise an X1650XT or higher or any GF7000 series (such as 7300GT) would be better.
DxVA of MPEG-2 does not require SSE2 nor would the variance be significant.
For software-only decoding, ATI is better than Nvidia. But in such case I doubt a higher-end GPU would help significantly.
sm8000, if the CPU lacks at least SSE2 then no GPU will help with DxVA of AVC and VC-1. Otherwise an X1650XT or higher or any GF7000 series (such as 7300GT) would be better.
DxVA of MPEG-2 does not require SSE2 nor would the variance be significant.
For software-only decoding, ATI is better than Nvidia. But in such case I doubt a higher-end GPU would help significantly.