UD3P hands down :P ...The P5Q-E is a great mb, but gigabyte has more consistent results.
http://img13.imageshack.us/img...ud3pprime953640qh1.jpg
With UD3P, you just toggle CPU/MCH reference from 63%-67% and you'd be flying, don't forget and HDT cooler also or a TRUE+200-800grit sandpaper :) ...