profoundnoah :
Have you applied ANY type of overclock?
All of this would point to a bad OC. I would recommend resetting your settings in AI Suite 3, then uninstalling it along with any other CPU OC'ing software you have. Nothing can beat the good ol' fashioned BIOS/UEFI OC.
Are you getting that temperature when idling, or during the test?
I've tried to apply OC on my proccessor. I think that's actually the problem. One core has stuck (not sure about this).
If I plug the pc out and wait some time, the core seems to be working. After I open an application/game, it's starting to use all of the core. ONLY ONE. If I only shut down the pc and turn it back on, the processor is still stuttering.
I've also tried to reset the processor with AI Suite 3 and uninstall everything that had to do with OC.
The temperature, when i'm benchmarking the processor, is between 50C to 66C(max.).
p.s.: When i open an application, every core works. The thing is that one core is used 90-100% and it stucks at that percent...