I kept it at 1.65v. Ive tried all kinds of crazy things and almost anything above 225 just hard locks as soon as the Bclk sets. I got it to set at 226 w\o freezing one time, but when I tried 227 it Hard locked again. Before I dive head first in to this im going to flash my BIOS.
Right now my Target is 224 Bclk for benching, or whatever in the neighborhood of 4.7ghz that works the best. Im hoping it wont take a crazy amount of Vcore though. Im going to work on finding the sweet spot with a lower CPU multi to see whats in store. Than Ill set this up on air outside and see what my GPU's can do in the cold air, and than after all that testing ill strap on the POT and hopefully I can just jump right in to finding where my CPU works best, without having to worry about the Ram\GPUs\etc. That way I dont waste half of my DICE\Time figuring out the other stuff.
Im wondering how different it is running 16x225ish from 21x225ish for the RAM\NB\etc.
Hopefully I can match up to some of your guys single GTX 295 scores finally