9600XT no WMV HD acceleration?

[morfinx]

Does 9600XT have no WMV HD acceleration? I can play 720p smoothly, but CPU utlization remains at 50-70%. 1080p is VERY choppy. "WMV acceleration" is enabled in control panel. Can somebody confirm wehter 9600XT can accelerate WMV HD?

 

[Entropy]

Nope. AFAIK GeForce 6 (Not even sure about the 6 series, but I know they're working on an H.264 HD for the 7 series. and up + The X1K series only support HD playback.

 

[morfinx]

I heard WMV HD acceleration is broken on 6 series, is that true?

 

[Dan_D]

I heard WMV HD acceleration is broken on 6 series, is that true?

Sort of. There is a fix for it found on the Microsoft web site. It's called the Purevideo fix.

To answer the original posters question: No. The Geforce 6 and 7 series and the ATi X1k series are the only ones to have such acceleration.

 

[morfinx]

Sort of. There is a fix for it found on the Microsoft web site. It's called the Purevideo fix.

To answer the original posters question: No. The Geforce 6 and 7 series and the ATi X1k series are the only ones to have such acceleration.

I did a search and seems like people are saying 6 series cards based on NV40 core do not work with Purevideo, is that true? I'm interested in possibly a 6800GS AGP which I think is based on the NV40 core. And do you have a link to the MS fix?

 

[pxc]

I did a search and seems like people are saying 6 series cards based on NV40 core do not work with Purevideo

PureVideo is a collective name for several features, including WMV9/WMV9 HD/MPEG-2 decoding, HQ scaling, adaptive de-interlacing, etc. http://www.nvidia.com/page/purevideo.html The NV40 has a partially broken VPU that doesn't work for full WMV9 HD decoding acceleration. The NV45 is just a NV40 + an on package AGP to PCI-E bridge, so it also has the same problem.

The PCI-E 6800 GS uses the NV42 GPU, which doesn't have the WMV9 HD problem. The NV41, NV43, NV44 or NV44A chips also have properly working VPUs. The AGP 6800 GS currently uses the NV40 core.

http://support.microsoft.com/default.aspx?scid=kb;en-us;888656 is the WMP10 patch.

 

[morfinx]

PureVideo is a collective name for several features, including WMV9/WMV9 HD/MPEG-2 decoding, HQ scaling, adaptive de-interlacing, etc. http://www.nvidia.com/page/purevideo.html The NV40 has a partially broken VPU that doesn't work for full WMV9 HD decoding acceleration. The NV45 is just a NV40 + an on package AGP to PCI-E bridge, so it also has the same problem.

The PCI-E 6800 GS uses the NV42 GPU, which doesn't have the WMV9 HD problem. The NV41, NV43, NV44 or NV44A chips also have properly working VPUs. The AGP 6800 GS currently uses the NV40 core.

http://support.microsoft.com/default.aspx?scid=kb;en-us;888656 is the WMP10 patch.

What do you mean NV40 is partially broken? So would it be better go with say X800 series if HD decoding is one of my requirements?

 

[pxc]

What do you mean NV40 is partially broken?

"The NV40 has a partially broken VPU that doesn't work for full WMV9 HD decoding acceleration." That pretty much explains it.

This page shows relative NV40 (6800U) vs R480 (X850 XT PE). The R420 should have similar decoding performance: http://www.xbitlabs.com/articles/video/display/radeon-x1000_38.html There's not a huge difference between those two if you. Both support DXVA and both will smoothly play 1080p WMV HD on an Athlon 2.4GHz (what xbits used). xbits didn't seem to use the nvidia dvd decoder, so MPEG-2 decoding is higher than it could have been.

 

[morfinx]

"The NV40 has a partially broken VPU that doesn't work for full WMV9 HD decoding acceleration." That pretty much explains it.

This page shows relative NV40 (6800U) vs R480 (X850 XT PE). The R420 should have similar decoding performance: http://www.xbitlabs.com/articles/video/display/radeon-x1000_38.html There's not a huge difference between those two if you. Both support DXVA and both will smoothly play 1080p WMV HD on an Athlon 2.4GHz (what xbits used). xbits didn't seem to use the nvidia dvd decoder, so MPEG-2 decoding is higher than it could have been.

Hmm, that's not as bad as I thought, looks like the NV40 does offload a lot of the work from CPU even though it's supposedly partilly broken. Perahps 6800GS is a better choice since it's faster in 3D applications?