Just picked up a 56, does anyone have a link to an idiots guide to undervolting and overclocking this?
I just left all P states at 950mv and then put p6 and p7 at 1000mv, then put memory to 950mhz and 950mv Set your p6 at 1600 and p7 at 1630mhz and then fan to 100% temporarily. See if it can run 3dmark.
You can try lowering memory to 900 but most if not all v56 I've seen can do 950mhz memory. Also you could try push core clock higher than 1630mhz but the benefits are negligible to be honest.
If it crashes drop the core clocks back slightly then if you've found your stable benchmark clock I'd run folding at home (f@h) for 12 hours and see if it's stable.
If it is then save the profile and drop fans back. I run at 1570 p6 and 1600 p7 and 950mhz memory, 1.00v core and .95v memory and set fan to 60 so it's virtually inaudible over case fans and temps max out 65c during gaming. Its butter smooth at bf5 ultra 1440p.