Sorry for reviving this thread if nobody cares any more.
This is on air cooling. Prime95 was biting the dust straight away on all four cores. No blue screens or restarts though.
I tried putting the multiplier up to 15 (5.00GHz), but wouldn't boot and had to reset CMOS.
Voltage in BIOS was at 1.575V for VCORE, and I think I had mch and fsb at +0.2V. Not sure why CPU-Z only shows 1.138V.
I'm now properly stress testing at 4.00GHz, 1.45V vcore and normal for everything else. I'll try and get it higher stably after I properly test the ceilings and stable settings on my FSB and RAM in isolation.
If anyone knows, what are the 'normal' voltages for vfsb, vdram and vmch? With my MB, it only shows 'normal' and then +0.1V, +0.2V etc.