Hello!
Welcome to the forum!
🙂When I started oveclocking my 955 I found this little tutorial/walthrough/set of instructions very helpful
http://www.overclockers.com/forums/showthread.php?t=596023&highlight=955+resultsI must also say that using BIOS version 0051 gave me best results, but I have not tried 0813. So can't really say much on that end.
I'd also like to add that I got my 955 stable at 4,2GHz with resonable volts and temp.
I really recommend you to read that guide.
Good luck
😉
Mobo: ASUS Crosshair V Formula
CPU: AMD Phenom II X4 955BE
CPU Cooler: Scythe MUGEN-2 Rev.B
GPU: MSI R7850 Power Edition 2GB
Memory: Corsair XMS3 cmx8gx3m2a2000c9
HDD: Samsung SSD 830 series 120GB
HDD2: WDC WD10EZRX-00A8LB0
PSU: Saphire Pure PSU 625W
OS:Windows 7 Ultimate 64-bit SP1
Case: Antec Three Hundred
BIOS ver: 1605