Which monitor is correct?

I've got my E8400 @ 3.71 ghz and on idle HWMonitor reads:

core 0 = 39c
core 1 = 35c

Real Temp reads:

core 0 = 27c
core 1 = 24c

Which is more reliable?

 

try speedfan, that's what I use and I find it very reliable.

or you could take the temps from speedfan and see which two temps are the same, and go with that.

 

I use CoreTemp for my Intel boxes. http://majorgeeks.com/Core_Temp_d5665.html

Nothing wrong the with speed fan program Speculant mentioned. http://majorgeeks.com/download337.html