Right now I have a 5870 and a 8800gts for physx. I do have one question though, when I update the drivers for my ATI card am I going to have to redo the Physx mod? How about if I update drivers on my Nvidia card? Right now I am using the 1.02 version found here http://physxinfo.com/news/942/hybrid-physx-mod-1-02-195-xx-drivers-and-win-xp-support/