Just went for a suicide run @ 1.8V with decent cooling this time (u know the drill, window open (8°C outside), 2 large fans, push-pull on the Ninja). Still can't get past 4.005GHz

. I tried MCH @ +0.3V (max aloud), FSB @ +0.3V (also max). Them & vcore/vdimm are the only adjustable voltages. I know it isn't the mem because i've had it running 950MHz @ 5-5-5-15, 2.15V. In this run it was @ ~890MHz, 5-5-5-15, 2.15V. Maybe when I get my new mobo (DFi LP UT X48-T2R) I will be able to tweak more settings and get a little higher but for now it is 4GHz.
@King, could u enter my 4GHz Pi run for a suicide also? This is strange, i am pi stable 4GHz, 1.6V, but as soon as I go past 4GHz the sytem locks up in windows.
Sorry for the ramblings.