Let me start off by saying I use my computer for games like Doom3 and HL2. I have an intel P4 1.4Ghz w/ 512 megs of ram and an ATI Radeon 9800 256 meg video card. I want to upgrade my CPU, but I am somewhat out of the technology loop. Would I be able to place another P4 into my MB or would that require purchasing a new MB? I was looking at getting a P4 3.2 ghz. Whats with the Athlon 64s are they better than the P4? If I had to get a new MB, would that require new ram as well? How about power sources, would a faster chip require an improved supply? Any help is much appreciated, I'm not sure where to turn.