here's what i did today, vista 64bit.

but i did not get the 3h, rebootet after 2:41h. i think psu or pwm section is weaking, as the power meter showed a crazy 447w just prime no grafics.. after 6h of 3h prime attempt i got screaming pwms and such but now they're calm again luckily.. thats although pwm's stayed @ 66°C thanks to the fan over it..

perhaps theres more to come with full watercooling