Yeah... settings as stated above. Actually, give vPLL 1.60v and vFSB (VTT) 1.36v so that you have some room for voltage drops or something. Of course, with a tier 1 PSU, that won't happen (at all?) but I was using a tier 3 PSU.
And... unfortunately, 4GHz still requires 1.422v on both chips. Only 1.38v is needed to boot into Windows, though.
And... since I'm using a Raidmax PSU, the system won't stay stable at any other settings than stock. My 5v line with this PSU is always undervolted.

But it's bootable up to 512 FSB FYI. I'll plug an external graphics adapter in right now... and see how much more I can get.