Have a Q9300 running at standard voltages with stock Intel fan. Core 0 runs at a constant 63C regardless of load or idle mode. The other 3 cores are running anywhere from 45C to 54C. Any idea why Core 0 seems to be running this high? If I decide to upgrade the CPU fan, I'll need something with a low profile, since the case has a huge side fan that gets in the way of anything that might stick out.