Greg, most of those games can have the PhysX forced to run on the CPU, so it's not really the same as missing out on.
Sorry, that was an older post I just copied and pasted. I agree you can run PhysX on the CPU and nope, you are not missing out. Not sure how it runs on the CPU, as I have never tried but from other users, it is a little 'hit and miss'.
I will edit my post.
