Or maybe 4.2 just feels low because I thought it was stable at 4.8 and I really should stay at 4.2 :) Edited Januby Sticky If it isnt the cooler, then maybe something is wrong with my methodology, or maybe I have a chip thats not as good as the reviewers had, or I have too high demands on the burn tests. With 2 cores at max load temp is low, 65ish. If I go down to 3 cores for the burn test temperature stays at 78-79. I went kindof half cheap with the cooler, artic cooling 7 rev2, I had very good results with that cooler before so I thought since its 32nm it should do the job, but it gets to 83 degrees on the highest voltage settings (at 4.6-4.8Ghz) when I burn test all 4 cores at the same time. I already did a round of memtest, but I will do another one at 1.6. I set my memories (corsair xms3 1333) at 1.55, I didnt try at 1.6, I will try that too and see if that helps. Yes on the cpu core voltage to 1.35, I tried that, it was stable at 4.8 for maybe half an hour of burntesting, then BSOD, and the same at other multiplier settings, every time I thought was stable, tried all kinds of voltage settings, at 4.4 I was sure it was stable, but it finally BSOD after a couple of hours in a game, and then I went back for more burn testing at 4.4 and sure enough, BSOD again. Also ghz is no indicator of processor power any more when comparing different processor architectures. Hardly ! very few get their i7 9XXs to over 4.0ghz and certainly not without some serious cooling involved.
Did you increase the cpu core voltage to 1.35V and your memory to 1.6V ? Also what cooler have you got sitting on top of it? Memory can sometimes be the bottleneck when you overclock so run memtest first to make sure you memory is happy at the set speed.