Im having some trouble getting the correct CPU temp info. I installed the CPU temp plugin and installed perl. Hitting detect finds 

coretemp i5500_temp w83793

 

and from there the dropdown gives me the following options

But none of these appear to be correct, as this is that the sensor readings in the IPMI show

 

I have no idea if the detected driver is correct. The mobo is a Tyan S7012. I cant seem to find anywhere to confirm what the sensor drive should be for this board. Or perhaps I just dont know where to look.

After some headscratching and testing, I have realized a few things.

In the IPMI, it lists the temps as "CPU Below Tmax" followed by a value. According to Intel Ark for my cpus (x5670) tcase is 81.3. So if you subtract the value in the screenshot, 67, from tcase: 81.3-67=14.3c. This was basically impossible given the temp of the room my server is in. I booted into linux and used some sensor tool to check temps and compare them to the IPMI values. It stated the cpu was idling about 25-30. It also listed two more values, HIGH = 80 and MAX = 96, neither of these match Intel Ark, but if we use 96 in the previous equation, the numbers work out. 96 - 67 = 29c, or about 85f, which is exactly how hot it was in that room. The CPUs have noctua coolers on them which should be doing a pretty good job of keeping them cool. 

I ran a CPU stress test and monitored the temps in both linux and the values in the IPMI interface, and as the temps in linux went up, the value in ipmi went down, confirming it IS measuring distance from SOME max value. I don't know how to confirm what it thinks the Tmax value really is (an the thresholds table makes little sense to me) but I've at least confirmed that temps are in check and the cpus arent overheating. 

 

I still need to do some more testing while monitoring the temp data in unraid, but I will do that tomorrow and share any interesting data.

hopefully this helps at least 1 person someday who might be scratching their head like I was..