I had to RMA my FX8350 so i went back to my FX4100 for now.
I bumped up the multiplier to give me 4.2GHz instead of 3.6GHz. Prime95 ran stable for 14 hours on small FFTS and 8 hours on the blend test. I just called it good there. Temps did not exceed 52 degrees celcius. After a day at 4.2GHz I started experiencing random freezes and crashes and then upon booting I got a BIOS reset with the message "Overclocking Failed" and my BIOS reset to the safe defaults.
My board is dealing with voltages, if i watch CPUID HWmonitor they fluctuate massively. I have Catalyst Control Center dealing with the frequency range (1700mhz-4200mhz)...
Do I need to manually increase voltage..? I've never had to on my 8350 and i do not recall doing it ever with this 4100 back when i OC'd it to 4.2ghz however long ago. (new board since then)
The only other overclock I have in my system is my Radeon HD 6870 oc'd for 1GHz GPU clock and 1.25GHz GDDR5..