Well the thing is I was building a computer for my friend and I had the Athlon XP 2200+ and I put the thermal pad and the heatsink on right, but his processor was messed up so I sent it in for the warranty. So in the meantime I got a Sempron 2400+ becaue they are going to take a while. But when this things gets back I was wondering if I should keep the sempron and sell the athlon, or keep the athlon and return the sempron.