Core temperature, dual core, only one core temp changes

[JNowa2]

I recently upgraded my heatsink and before hand I only either check the temp through bios or through an older program that only showed on temperature. I not have tried out 4 different programs, all of which show the temp for each core independently. My processor is an E8400 and core # 0 temp changes with load, had it as low as 26c to as high as 50c. core # 1 is always at 36c. Therefore the average temp which is, shown in bios, is always artificially high under idle. What would cause this?8

[Allan_J_Intel1]

Thanks for joining the community. I understand one of the processor cores is running high temperatures.

Please bear in mind there is always one core that is constantly running all the time and this should be expected. The maximum processor temperature would be 73C.

Allan.