At 3.3ghz I had a blue screen during the maxwell speed test. However I had run cinebench several times before that without any problem(1737 points multi cpu test!), and ran some tests like sandra benchmark too.
But I think it would have been stable if I had set the voltage a little higher. (like 1.35v... - 1.325 v stock).
Regarding the motherboard question, I use an Intel Bad Axe 2. The bus is set at 4x333Mhz, with the memory running at 1:1 -> 333 (DDR 667) cas 4.
All voltages are stock.
Pretty happy with this new machine for now
