Well, I have a 970a-d3 rev. 3.0 mobo, I know it sucks for OC, but still, I raised the voltage to 1.404v and multiplier by 22 and got 4.4 ghz, disabled every power saving feature, booted up, started prime95, 46 minutes, cpu 99% usage all the time, no problems, but What I noticed is that the cpu still underclocked itself for temperatures, but still, the air coming out of the 212 evo that goes out straight from a top fan, wasn't even that hot, and the case wasn't even warm, so my guess is that the motherboard throttled it down, well, it goes like this, I stopped the test at 46 minutes and run cinebench r15, impressive results, from 599 to 670, but render time took noticeably less time, everything OK until I shut down the computer and when I booted it up.. 2 secs and it shuts down, another boot up, weird sound coming up from either the HDD or the disc reader, but booted up ok, the same happenned three times in a row that I was testing until I set my cpu to stock voltage and frequency, what does that mean? of course I will never OC again in this shitty ass mobo.