Which temp utility to believe?

[tuffluck]

i used a few programs with my non-oc'd e6750, arctic freezer pro 7 and as5. here are the results at idle, core 0/1:

speedfan - 36,37
real temp - 36,37
core temp - 30,31
TAT - 23/24

max 100% cpu real temp shows 62/63 while TAT shows 44/45. what is going on? which is right? are those pretty good temps? thanks.

 

[CompuTronix]

Real Temp and SpeedFan are correct.