mocchan thx for input. btw what are your temps on 2700k @4.8
Currently my ambient temperature is 12C. My hottest core never goes above 68C running Prime95 SmallFFT's
I achieved 4.8Ghz using 1.39v as reference.
However, when it was summer, my ambient temperatures were 25C and my hottest core went up to around 79C.