Most likely, that CPU is a 'D0' stepping, so it should not need as much voltage as my C0
model to OC. You can start at 1.3V Vcore, set your CPU ratio to 20, and increase your Bclk
in increments of 10. Make sure you can boot into Windows, and run three tests of LinX.
If its not stable, LinX won't even complete the 1st test without an error, or you will get a BSOD.
You can then increase the Vcore very slightly...say, to about 1.32V and test again.
To achieve absolute stability at 4 GHz, you may have to adjust your CPU PLL voltage to about 1.60 to 1.89V,
and your IOH voltage to about 1.30V (I have to verify this one later). Increasing your Bclk will also affect your RAM as well, so you may want to increase your RAM voltage to about 1.55 to 1.60V. DO NOT EXCEED 1.65V,
or you WILL damage your CPU. I can't stress that one enough.
I currently have my 920 at 4 GHz, but I can do that because of the uber cooling. When I get home,
I'll record all the pertinent voltage values, and you can use that as a guide.
Its going to be a long and tedious process to see just what your CPU is capable of, so don't rush things.
Do the LinX test each time you change a setting, so you will know right off the bat if that change was OK.
Eventually you'll get there.
Let me give you a lil tip that might save you a few hours of headache: do not use your main Windows install
when OCing, because sometimes when you get a BSOD because of a bad setting, Windows gets corrupted,
and you will have to reinstall from scratch. Use a Windows install on another drive that you can afford to f@#ck-up. Trust me on this one.