When I OC my 2500k I always turn off the energy saving features until I find a stable overclock. I know one is EIST but I cant remember the other one. Your CPU core voltage looks very low at 1.06v too. Try bumping that up to 1.2v or 1.25v for now. If you are trying to OC, I agree that 1.3v should be good for 4.2-4.4ghz OC's.
12/9/16 at 11:57am