You said you are currently using an Intel P4 processor. You will need to find an Intel processor that will work with your motherboard. Intel and AMD processors just don't mix on the same board.
Well, right now I am stuck in dilemma, I am not sure what to get, basically, I want a pc that can play crysis on the high setting with good fps, but I am not sure what to get an nvida 8800gt video card or a amd X2 6400+ processor.
My PC hasn't been updated in quite a long time, I currently have a 3.2 Intel Pentium 4 with an Radeon X1950pro video.
Help is much appreciated