Alright i have a old 2000 XP, I was running idle around 33C and somewhere around 32-35C ambient. I removed the thermal paste cleaned it with artic silvers cleaners. When i put it back together I was getting around 42C idle. Now i know that artic silver 5 has a break in period but 10C seems like a huge difference. I also removed it again and cleaned again did the same thing execpt i used everclear at the end to make sure there was no residue from artic silver cleaners. Still about the same result. Also cleaned heatsink and all that crap. Anything you can think of ?