What is the temperature of my CPU? That is a question with a very long answer. The very long answer is here:
The short answer is it depends. It depends on the ambient air temp, the CPU's fabrication process, which DTS sensor you are reading, what tool you are reading it with and so on. We know from previous discussions that CoreTemp returns AMD CPU temps as below ambient, which is impossible with air cooling. So, how can we trust this tool? CoreTemp reads 37,37,35,34C for my Q6600. Of course my system is basically idling and I have EIST enabled. There are just too many variables.
You can pick another tool and get another answer. SpeedFan does temps, RealTemp does temps and both of them can be calibrated. Based on the guide linked above, you should probably use SpeedFan just for the sake of comparison purposes. Also, the guide gives temp ranges for C2D and C2Q procs. It's all very confusing. I suggest that you pick one tool and use it as a baseline. Then evaluate your readings as deltas from there.