Originally posted by: blurredvision
There is a lot better discussion on this in the Video and CPU forums, but here's what I've gotten out of it. With what nVidia is doing with their drivers is basically taking the vertex processsing load off of the GPU and puts it onto the second CPU core that is basically doing nothing while you're gaming. With the second core doing the job just fine, this allows your GPU to do other things faster, without being loaded down with so much.
This only is worthwhile, however, if you are GPU limited in games. If it's your CPU that's holding you down in framerates, then this will do nothing for you (which hopefully at the moment is not the case).