I was wondering if someone could direct me to a website that sells Intel Pentium 4 1.8Ghz (Socket 478) processors.....cheap. I've never bought anything online and could use some direction. I tried searching, but seem to be going in circles, also I can't seem to find a 1.8 Ghz. Are these out of date? I'm not looking to spend a lot of money and since that's the processor that came witht he computer originally, I figured I would just put that same model back in.