I just loaded up my game machine, bought in 2001 for £500 approx,
Tried playing COD4 on 1600x1200 with everything on and it worked (very slightly laggy but playable)
I currently have: P4 3.4Ghz 550, X700 Pro, 1GB Ram, 1 IDE Hard disk (without raid obv) ..... Which is worth upgrading first for speed/power? Im thinking CPU?