Nvidia Quadro - how to set fixed clock (but not the full clock!)

I have Dell Latitude E6500 with dedicated Nvidia Quadro NVS 160M. Dynamic gpu/shader/memory frequency switching makes sound crackle (caused by high dpc latency spikes). This makes notebook unusable for listening music etc. I think this is unsolvable by RMA and other laptops may be suffering this problem too.

In registry I set powermizer to disabled while on ac (full performance, no need for power saving) and enabled while on battery (power saving needed, I don't listen to music much while on battery, so I think this is acceptable).

Problem is, that gpu running full clocks produces more heat -> notebook produces much more noise.

Best solution would be to control clocks manually, on battery I would run on lowest clocks most time and on ac higher but not highest (low clocks -> veeery slow windows aero, high clocks -> much noise). Of course I would use full clocks while gaming etc.

Question is: HOW TO CONTROL GPU SPEED MANUALLY? I tried Riva Tuner but it does not seem to work.

 

You can always give nVidia system tools a go. It's on their website, just search for it.

 

Thanks, this seems to be exactly what i was looking for. I didn't know there is something like this by nVidia