I just set up my new rig last night and am messing with it today. I'm monitoring temps with ATITool for the video card, and trying both Everest and SpeedFan for the CPU. Everest only shows the HDD and Aux temps, while SpeedFan shows a bunch but doesn't label what they are. From what I can tell, one of the Temp1 readings is the Aux temp and one is the CPU. Judging from SpeedFan and the temp in the BIOS, my CPU temp idle is about 22C on average (seen it as low as 17C!). The Aux temp is between 18-20C on average. I thought it was ridiculous, so I got a mercury thermometer and let it sit on my case for probably an hour and a half now. I was even doing some gaming, and I just checked that thermometer and my room's ambient temp right now is about 66F, which is 19C. I've never seen a CPU in the low 20c Celsius on air before...should I believe it, or do you think my temp sensors are off? The setup is in my system specs. CPU heat sink is an Alpine 7 that I lapped with 800 and 2000 grit sandpaper pretty damn smooth with thermal paste that is comparable to AS5. I don't have any crazy cooling in my case yet; only two 80mm fans (one in one out).