Having read 003's rant on why what will and won't work and why, I feel I may be setting myself up for some hardship.

My 'old' 920 C0 does 200x20 (but at 1,55v) and with a QPI voltage of 1,6v it runs quite fine at 2000MHz ram (4000MHz uncore).
These voltages are of course crazy and only my nifty home made WC setup keeps it running, that's why I wanna try my luck on a D0 chip.

But now it seems I am just plain lucky reaching 2000MHz ram at all! ... I'm now not so sure I should try a D0...