Originally Posted by apaige
I can only say that I run my Phenom 9600 with the "ondemand" frequency scaling governor (on my M3N78-EM, GeForce 8300 IGP), so I don't think that's the problem.
And VDPAU is running fine for you?
Which kernel and nvidia drivers are you using?
Can you then check what performance levels are offered by the 8300?