OK lets take things from the start: When I first got the board and I was on the first released BIOS update I used to be able to get a perfectly stable 4Ghz with just a manual setting of 1.375 VCore, no LLC or any other settings. The problem was that my RAM didn't work at 3200Mhz so I updated to the next BIOS releases as they came by. Somewhere along the way an update rendered my OC with these settings unstable and I had to start using LLC. And my question is: Is LLC even useful on this board? I've tried every setting from 2 to 5 and the only thing it does is blast the chip with unnecessary Vcore while NOT doing what it is actually supposed to do and that is preventing Vdroops. This results in random crashes while gaming or even while browsing with WHEA Uncorrectable errors indicating insufficient voltage. No matter the LLC setting Vcore drops as low as 1.330-1.350 which IS NOT enough to sustain 4Ghz on my chip.

Just check out the screenshot below. This is with 1.375 and LLC 4! And it still drops as low as 1.330. This is not acceptable! Not even momentarily! Before you rush in and tell me "Oh this is normal - you don't understand how this works blah blah" I am gonna say that it crashes only during low CPU usage scenarios ie when browsing or on non cpu demanding games (like resident evil revelations 2 which crashed just yesterday with the above 1.375-LLC4 settings. When stress testing with AIDA of prime95, even with LLC 3 it gets through hours of testing with no problem and dozens of successful Cinebench runs as well. So the problem is low usage scenarios where LLC is not doing it's job properly. So yea it is NOT normal that it thinks it can drop that low even in low usage scenarios since it still crashes!

I know for a fact that 1.373 is enough to maintain my OC on all load levels. Even with 1.375 and LLC 5 sometimes Vcore drops below 1.373 momentarily and although it hasn't crashed yet with this setting it blasts the chip with voltages as high as 1.43 and under no circumstances I want it going above 1.4 since it is not only potentially damaging but also unnecessary.

So I am looking for a way to get rid of the Vdroops, without unnecessary overvoltage. There should be a way to set an absolutely stable Vcore that doesn't fluctuate at all. Like I set a 1.375 and it stays pegged at 1.373 at all times no matter the load. I am now gonna try something like 1.39 with LLC 2 but I am 99% sure its gonna have the same drops. No matter what I do I it seems can't get rid of them. Perhaps ASUS needs to look into LLC on this board and improve it in a future BIOS.

Sorry for the long post. I wanted to provide as many details as possible to make it clear what the problem is.