I upgraded my PC yesterday with a C2D E6420.
So the specs currently stand at:
Intel C2D E6420
2GB of Ram
Geforce 7600GT
It's really incredible how much faster this thing is over my old P4 3.2ghz. To give you an example, on Counter-Strike Source I could run it at 1024x768 (I honestly don't see any point in going at a higher resolution that that like most people do) everything on high, 16x AF 4x AA, and generally get between 40-50 FPS. Now, on those same settings I get 150-200fps on average.
I don't plan on upgrading anything else for a while. Now that I should be able to run Bioshock pretty much maxed out, as well as Crysis and UT3 near the highest detail settings I have no need to upgrade for a while.
Also, I've reinstalled C&C 3 and BF2, so if anyone wants to play with me, hit me up on xfire: Ashuku