Not sure if this has been posted already but there is now an fps limiter built in to the latest beta drivers - download http://www.nvidia.com/Download/index.aspx?lang=en-us (option 3).
You then need NVIDIA inspector tool http://downloads.guru3d.com/NVIDIA-Inspector-1.94-download-2612.html
Then enable the fps limiter by copying this XML file into your inspector dir http://www.mediafire.com/?cdb7g1a27sxjnxx
FPS limit should now be available in the settings within inspector tool.
I have this working, it is pretty much a must have for any gamer...
Enjoy.
You then need NVIDIA inspector tool http://downloads.guru3d.com/NVIDIA-Inspector-1.94-download-2612.html
Then enable the fps limiter by copying this XML file into your inspector dir http://www.mediafire.com/?cdb7g1a27sxjnxx
FPS limit should now be available in the settings within inspector tool.
I have this working, it is pretty much a must have for any gamer...
Enjoy.