This is a hyper necro, but i'm a bit desperate.
I've been having a lot problems with BIOS's beyond 1405.
On 1405, I could get an absolute rock solid 4.0Ghz/4.2Ghz without any stability issues (But with what I consider very high voltages, which with even with a megahalems results in high temps at load. With the crappy Cooler Master R4 fans in my set up and the stock 200mm fans completely on their last leg basically, it's what it took on my 950 and this board to get stable)
I was planning on upgrading to Ivybridge/sandybridge and was going to repurpose this into a new PC for my brother. So before I did that, I wanted to try to get to 4Ghz on the lowest volts possible.
On BIOS 1405 It was basically impossible. No matter what I did I couldn't get it stable.
So I thought i'd try upgrading the BIOS again (Had once prior a few years back, didn't go well so I rolled back). Up to 1701 and using all my settings and volts from my stable 4.0Ghz on 1405 it would not post no matter what.
Turns out the voltages to get stable I was using on 1405 were obscene compared to what I found were considered normal in this thread
Using the volts recommended in that thread I could get 4Ghz (Bclk 199 x20 = 3980. ;was so I could get QPI under 72000. Anything over 72k caused stability issues previously) to post and get into windows. But I cannot get it stable at all. It will BSOD P95, and I can't stress the FPU with AIDA64 because the temps get a lot higher than P95 and it throttles the CPU to compensate.
I'm at wit's end right now.
I am migrating this rig to a new case (Fractal R2 XL) along with a Noctua NH-D14 and 4 Corsair SP140's.
I'm hoping that this will help me in my quest to get back to 4Ghz stable, because now I just cannot seem to do it at all.
I can get 3.2Ghz Stable at 1.1 Volts VCore with 1600Mhz 9-9-9-24-1N RAM @ 1.25 QPI/DRAM Core no problem.
But i'm afraid to try anymore.
After pushing the multiplier to 21x, bclck to 192 and Vcore/QPI to 1.39 each P95 at 4Ghz has been running for quite a bit and hasn't crashed yet. I am crossing my fingers.
Heck I can even browse the internet without an issue with CPU usage at 100% while Prime is running so far.Edited by MrBonk - 11/15/13 at 5:15pm