I plan on upgrading my videocard in the next couple of months and I'm thinking that the 6600gt is the way to go,. I have a 9700pro and I'm wondering how much faster is the 6600gt is over the 9700pro? Also i've got an athlon xp ( system specs are gaming rig in sig ) and would the 6600gt be bottlenecked by the cpu? Would I be better off sticking with the 9700pro?