I found out that I had my Folding@Home set to 75% and my 4.1GHz i7 stayed at 60C or less so I set it to 100. Now it hovers around 65C according to my motherboard utility (Gigabyte EasyTune6). Since EasyTune doesn't record maximum and minimum temperatures I got HWMonitor and let it run. This isn't the first time I've used it but it's the first time I've seen it record temperatures exceeding 120C.
Looking closer, the monitoring chip has 3 temperature readings. The second one coincides with the GIgabyte EasyTune6 CPU temperature so I'm assuming that is the motherboard's CPU reading. The third I think is the northbridge but I'm not sure. I also have the 4 core temperatures from the CPU itself.
This morning I woke up to see that my CPU exceeded 120C, or so HWMonitor thought. The core temperatures were perfectly reasonable but the TMPIN2 reading maxed at 123C. What would cause this? Is it a glitch in HWMonitor's ability to read that chip? All the times I've been at the PC it seems to read the temperature fine and I don't know how the motherboard's CPU temp monitor would hit 123 if the CPU cores never exceeded 70.