hi im building a new comp for gaming but dont know which graphics card to get. Money isnt really an issue but i really dont WANNA spend 400 dollars so pls give me some advice. I really want physx, as a lot of REALLY cool games are using it. My motherboard im currently selecting is a msi evo with a 16x and 4x pci e. I was told to get a nice card and then pair it with a physx card in the 4x. would this be considered crossfire, i think not? and would this create a bottleneck. help me out. also, do all cards support physx or do you have to get one of those double decker cards. im trying to figure this out, i want dx11 FOR SURE so a 4870 might be what i get. MY OTHER QUESTION is, even though everyone is loving ATI right now i here a lot of cons about the drivers. i dont wanna be stuck with driver issues, do NVIDIA cards have this problem. i have no problem going nvidia if this is the case. also, why does ati have way more stream processing than nvidia. SOMEONE SMART EXPLAIN ALL THIS PLS!