Yup, thats what Toms Hardware concluded, seems that still hasn't changed with Kepler.
Your running a GTX 680? am i right in thinking the less CUDA cores you have the lower Physx performance will be?
I'm thinking of those poor buggers running the run of the mill ~£200 GTX 660.
they would probably be better off running Physx off the CPU, provided they have a Sandy / Ivy Bridge K, or a Phenom II x6.
Yeah, using a 680. I don't think the extra cores help with physx much in any game. It doesn't need many cores to be able to run it at the highest setting in games without lag.
I'm going to try the WHQL drivers as I've seen people achieving better scores with these than the new beta's.