My currently dying computer has a 2.0 GHz Pentium 4 processor. The one I've lined up to buy as a replacement has a 1.5 GHz Pentium 4 processor. Are Pentium chips typically just sloted into place, or soldered? I'm thinking if sloted, I can simply extract my own chip and replace the one in the other computer with it. I will have to open it up anyway. I will be salvaging my own CD Writer drive and the RAM chips into the replacement computer.