Strange.. with my T3eH8, I can enjoy 1600MHz memory @ 7-7-7-24 timings, with 1.65v. CPU VTT only needs to be increased to 1.24v and Vcore at 1.28v. I just leave all other voltages @ stock, including IOH @ 1.10v.

Been folding @ 4GHz ever since... stable in everything. It was a breeze overclocking the DFI board.