I was helping a friend with an AMD Athlon XP installation, and the CPU went in with no problem. But...the heatsink was another issue. It was REALLY REALLY REALLY hard to get the 2nd clip on...I had to press extremely hard with a screwdriver to get the thing in...and it slipped before multiple times when I didn't press as hard...if it slipped when I finally got it in....that motherboard would have had a large hole in it. I'm using the heatsink that came with the retail CPU. Any comments?