Today I edited the AppleAGPM Power management kext to make my GTX660 Power management work. hat seems to work. Now I read that the newest NVIDIA webdrivers with Cuda just works as well. Did you use an edited kext as well or just the NVIDIA drivers?
Do you also see that Power management gets enabled on Console? With edited kext I can see that. Please help me out here...
Edit: I had to learn that edit the AGPM kext did not fix the issue for me too. I did put the original file back and will now download and install the NVIDIA webdriver.
Edit 2: And that works as it should.