Ok, I just wanted to know how this looks for a 4.0ghz overclock. Been running Prime95 for about 20 minutes and the Temperatures have stayed pretty cool on my Xigmatek Prime SD1484. All I did was change it to 40 and never touched anything else as I read somewhere, that 4.0ghz even on a stock cooler is ok if you just change the multiplier and leave everything else on auto.
I'd run Intel burn test to find your max "worst case scenario" for temps. On a nice cooler like the Xigmatek, I wouldn't want to see temps more than 60C under that program.
However, you need to read the warnings before running intel burn test!!!!