Damn that's good for the voltage! I can't get my FX 6350 stable below 1.46v!
But I haven't tried everything you did. ALL power savings are off, cores unparked, it runs at 4.6GHz constantly because if not there are issues with performance. Cooled with a Noctua NH-D15 it's Prime95 stable for 6 or 8 hours. I forget. THe motherboard is an absolutely amazing Asus Crosshair V Formula Z.
I'm planning on selling this board and chip within 2 weeks to be replaces with an Asus Z97 Pro and 4670k, but seeing your thread tempts me to mess with the overclock some more!
When I first got the chip I tried everything possible and it was stable at 4.7GHz using 1.52v while 4.8GHz was unstable but close. After some time became unable to run that. and 4.7GHz is not stable at any voltage.
I was thinking of attempting to delid as it is possible with a soldered chip, but it was too risky. Even on this voltage I can't use Prim95 unless I put case fans at max or else I get a shutdown from the motherboard at around 83-88c even though the settings for that are disabled and the CPU shouldn't do it until 90c. I'd like to keep it under 80c anyway.
Any suggestions? Should I try FSB 230? Above 2400MHz NB and HT doesn't work for me either.
How on earth are you able to use that voltage though!? I've spent days and days learning about every setting and voltage, trying recommend and not recommended, tweaking every voltage setting and testing for increased stability. But All it's come down to is I need 1.46v to run 4.6GHz.
I'm definitely going to give this a shot. Right now actually.