Amd phenom ii x4 925

It would be helpful to have some more detailed system specs.
I also have experienced some out of control thermals, which resulted in a burned out CPU. I thought I had it isolated to CPU, as replacing the processor (X4 940BE) seemed to resolve the situation. After about a month I started having heat issues again, this time with an X3 720BE.
I replaced my 790 GX mobo with a new one and this resolved the overheating issues.

I'll mention some things to try first, unless you've already done these. Open your case and thoroughly clean out all dust bunnies. Make sure to pay particular attention to heat sinks and fans. Ensure all fans are running properly and replace as necessary. Check your cables to ensure good airflow on your case.

Check other temps, is your motherboard system temp high? Are you having any other issues other than the CPU overheating? Is this the CPU your PC came with, or is it an upgrade?

Your CPU will not last long at 80C. It is designed to go core temp as high as 60C. I would leave it off for now, unless investigating causes.

if you replaced the thermal paste and the fan and the temps are still high....hmmmm download the sorftware T_T suggested and check those. chances are the sensor is malfunctioning.

if the cpu were to be faulty then i think you would get crashes and restarts.....i think.

Thank you T_T I looked at my heatsink and it was packed with dusti cleaned it out and now the temp is way better. Thank you for all the help.

Best answer selected by 4870x2card.