Best place for a temp probe

[Summoner]

I have a probe attached to my Orbital Matrix and i want it to monitor CPU temps. The probe end isnt flat, its about 2mm wide, so wheres the best place to get a fairly accurate temp? So far, i tucked it under the heatsink resting next to the CPU socket and am getting 40C idle.

Thanks in advance for any tips!

 

[EnderW]

most people measure under the tongue, although the rectum is more accurate