Open up CPU-Z , CoreTemp , and Prime95 . Make sure Prime95 is configured . Click Custom , change “ Min FFT size ( in K ):” to 1344 , and change “ Max FFT size ( in K ):” to 1344 , then check “ Run FFTs in-place ” and then press OK to start .
Step 2 :
Start Prime95 and look at “ CPU Load ” in the CoreTemp app . If one of your cores is not at 100 %, your system gets the blue screen of death or just freezes , that means your settings were too aggressive and your CPU has failed the stability test . We normally test for 1 hour . You can keep it running overnight for increased assurance . testing .
In the picture of the right Core # 1 is at 55 % which means this CPU has failed our stability testing .