[mythtv-users] Performance issues with new 9400GT

Johnny jarpublic at gmail.com
Wed Sep 16 18:12:53 UTC 2009


> No, the problem is with the integrated video card you had a much much
> faster bus and without VDPAU, you are not making use of the new video
> card's processing power.

Just to clarify, without VDPAU you are decompressing the video with
the CPU and then sending it over the PCI bus. With VDPAU you would be
sending compressed video to the card and it would be decoded there, so
you would have much less data going over the bus. Having said that, I
have done this with PVR-150 recordings fine. But your OTA HD
recordings are going to be going over the PCI bus as uncompressed HD
video. Then they will get scaled down by the video card. So that will
be a problem. The problem isn't the 9400GT it is that your card is
PCI. It would be better to get a PCIe or AGP card if you have the
slot.


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