every program i use is as reliable and accurate as each other they all say the same. But core temp is easiest as its loads in a second and shows the core temps
PC Wizrad and Speedfan say the same temps, but Intel TAT and Core Temp both say different temps, but they're the same as each other, so there's two sets of temps
52C under load is a good temperature. I really wouldn't worry about it. If it climbs above 60C, then I'd start to do something about it. On a hot day after a good gaming on BF2 I find that my core temps are around 52C and my GPU is around 54C'ish. Like I said, with my C2D the only time I would be concerned is if it started going above 60C.
PC Wizard is also what I use to monitor temperatures. It seems to be the application which gets the closet readings to that of TAT. Both speedfan and PC Wizard also read my voltages as some crazy figure as opposed to the actual voltage so I wouldn't worry about that either.
I got an Email from Intel telling me to Email Gigabyte, so I did and they say that Easy Tune 5 is the best for reading the temp of the CPU on my Gigabyte board, it reports it as being 13c, which I highly doubt, so now I'm just stumped!!!
Checking his BIOS is about as useful as those programs that misread. You can't check your BIOS when under heavy load so for load testing that's pretty useless. Your board isn't that different from mine and the majority of those applications work fine for me. To be honest if your not noticing any problems with your PC (such as crashing, general use lag, locking up) I wouldn't worry about it until then.
K, don't worry about your temperatures unless you start getting over 65C or so in PC Wizard. For overclocking, you can handle higher temperatures for temp. For instance, right now I'm running my Pentium D at 74C . I guess it is putting out over 210 watts of heat . Is it worth it for nearly 1100PPD? Probably not. Bah for the 8xx series of Pentium D. Be glad you have a Core 2 Duo .
1100PPD is for the Folding @ Home project. I use both TAT and PC Wizard. PC Wizard is pretty much dead on with what TAT says anyway so both are good for me to proof each other.
Well it's a toss-up, and I think the way the software's decoding the signals from the sensors is incorrect so I've given up and just waiting for it to blow up spectacularly.