which ram timings?, qpi / nb frequency? sounds like the ramtimings are to strong (IE Crash usw), lower the timings and try again
Sorry to take so long to get back to you, but I figured out the root of the problem. It was some stupid power saving feature in the BIOS (not C1E or EIST).

I've managed to get my OC back, but now I can't get it stable

I'm trying to test with OCCT, but it keeps coming up with errors on the cores. I occasionally also get BSOD's. I want to up the vcore, but I haven't got a clue what is the safe limit. I'm currently on 1.375V, and I'd increase from there, but the problem is that the voltage climbs another .03V under load, so that it's above 1.4V. Is this too high?

My temps top out at around 72C on the hottest core.

My current settings are:

Multi: x21
Bclck: 215
DRAM: 1723MHz (7-7-7-18 2T)
Uclck: 3448Mhz

QPI Link data rate: 7759MT/s

CPU voltage: 1.375V (shoots up .03 under load)
CPU PLL: 1.84242V
QPI/DRAM CORE (VTT?): 1.35V

DRAM: 1.65681V

IOH: 1.25916V
IOH PCIE: auto
ICH: 1.25916V
ICH PCIE: auto

I also read somewhere that high voltages on the CPU PLL can cause problems. Could this be what is causing my system's instability?

If I end up having problems again with my SB, what is the reccommended voltage for it? Or should I just set the minimum again?

Thanks!