Ive had my system for about 2 years now. AMD Athlon X2 4200+ Oc'ed slightly, 4 GB ram, 1 tb hdd (fast 10,000rpms) sata, MSI K9N Mobo. and 2 8600 GTS superclocked. I only get about 40-70 FPS in Left 4 Dead 2 and about a couple hundred fps in CSS on all low settings. I believe i should be getting much more FPS since my system is fairly powerful, but i do believe it is my CPU causing the problem. Is this the cause, because i am looking to upgrade my CPU so i dont wanna waste money getting a cpu and still get low frames. any suggestions? oh yeah, i am running windows 7 64 bit.