Stuck at 4.3

[Moitessier]

Destroyed ASUS P9X79 WS. Crushed CPU Socket pins replacing cooler. Had Sabertooth as backup. Still shrink wrapped. Transferred all components from dead P9X79 to Sabertooth. OC at 4.3 Blend & Heaven 10 hrs flawlessly.

After 3 weeks cannot get 4.4. Believe problem not Vcore volts but CPU-Memory instability. Realize with minimal info provided not much anyone can do. Grateful for best guess.

 

[Dan_D]

It's been awhile since I've messed around with X79. Have you tried messing with the VCCIO voltage? I believe 1.1v may resolve that. I seem to recall that helping when memory stability might be an issue.

 

[cortexodus]

Sounds like you just happened to lose the silicon lottery is all. There's no guarantees in overclocking.

 

[Moitessier]

Dan_T : I have experimented with CPU VCCSA with no luck. It is set at 1.100 now.

cortexodus: I have pretty much come to the same conclusion. But 43 is a bad luck number
for me. If I can't reach 44 I might lower it to 42.

Bumping VTTDDR, Blend at 4.4 for 6 hrs then thread 7 quit working. That is the closest I ever got.
I have been patient and methodical. Taking over 40 pages of notes of all BIOS, changes, results and of course usual desktop overclocking aids realtemp, cpuz, etc. Thanks to both of you for taking the time to respond.

M.