A friend of mine had a 7900 GTX, which just stopped working one day, so he took it back to the place where he got it and they RMA'd it for him. He got a Asus 7900 GT to use in the mean while. I have a BFG 7900 GT. Why does he get better FPS than I do? His specs. Opty 165 @ 2.3Ghz(he didn't want to go higher) OCZ DDR400 Platinum Edition 2 GB stick. Enermax Liberty 620 W PSU. Asus A8N5X. THe difference is not by a few FPS, it's by about 30 or more. sometimes less. I really would like to know whats holding my system back... Im running a 2.53 GHZ 3700+ now. with 1 GB ram, had to take 1 GB out or it won't OC. If I get his ram...would that help? or a new mobo? or is this not enough power for PSU? I have no idea whats going on.