I have a GTX480 already. I saw the GT430 and wanted to know if any of you guys have experience using another card for PhysX? Also how would I install this card just for PhysX? do I have to uninstall my current video drivers? Or do I just put the card in and set it to PhysX in the driver options? Here is the GT430: EVGA 01G-P3-1430-LR GeForce GT 430 (Fermi) 1GB 128... Would the GTS450 be a better dedicated PhysX card? Or is the GT430 enough?