Originally Posted by ttsiodras
Run "glxgears", and while it is running, from a different terminal, type:
nvidia-settings -q all | grep GPUCurrentClockFreqs
In my GT240/GDDR5 - which under windows runs at 1.7GHz (verified with GPU-Z) - I get...
Attribute 'GPUCurrentClockFreqs' (home:0.0): 405,324.
...which of course causes abysmal performance under Linux for this class of card (4500fps).
See also http://forums.nvidia.com/lofiversion...p?t153703.html
where the same problem affects CUDA speeds (under Linux, 1/5th the speed of under Windows)...
What card model are you using? What speed do you get from glxgears?
I'm also getting ~4500 fps in glxgears, but still getting the same 550,800 GPUCurrentClockFreqs. The card is the XFX DDR3 card: http://www.newegg.com/Product/Produc...82E16814150451
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
22844 frames in 5.0 seconds
Attribute 'GPUCurrentClockFreqs' (phoenix:0.0): 550,800.
EDIT: I don't know a good way to test CUDA as I bought the card for gaming.