yeah there normally is an internal probe, there is in mine and probably in his too, but theres some cases, even one I was looking at not too long ago, that also come with a temp probe so you can see the temp on the front of your case. You have to read up on your AMD 64 cause I really have no idea and when I meant under the cpu I meant UNDER the CPU itself not between it and the heatsink. Thats what I read on some instructions of the thermal probe I saw but not all systems are the same, I'd say put it on the bottom of the heatsink, between the cpu and heatsink if you could, but of course not on the little square you put your thermal compound on, so just place the thermal diode on the bottom of the heatsink a bit off center if the wire is thin enough. 82F for your CPU is excellent, that's 27C so yeah you're doing good in that area if that is your CPU temperature, its still pretty good if its your system case air though. but 27C on an AMD 64 muchless would be pretty damn good so you wouldn't have that without very efficient cooling. So I think the 82F is just the air in the case temp. Let me know what happens