Find out GPU operating frequency ?

I’d like to know if it is possible to find out the GPU operating frequency of the specific GPU that I am using ?
I am using Quadro FX5600, GeForce 8800GTX.
I want to know for Quadro especially since it is 675MHz for Geforce.

You can get this information by running the deviceQuery sample from the CUDA SDK.

or by downloading gpu-z, google for it its free. it also tells you useful stuff like shader speed, core speed, bandwidth etc etc.

Thanks a lot