I'm having problems with the temps of my QX6700, as well. In fact, I had to revert from Scythe Ninja RevB to the stock cooler, which does much better! I RMA'd the Ninja, and will be giving next try when a new one arrives.

Anyway, for the 24/7 work, I'd like to keep the power savings setting in BIOS (SpeedStep, C1) so that the CPU only kicks when needed (right now it's working at some 1.14V and 1.8GHz, with fans almost stopped; when I do some HDV rendering it goes up to 3.10 GHz and the temps never exceed 75C). FSB at 310 MHz is the max I can get without increasing the Vcore from Auto (which is the only setting possible when using C1/SpeedStep). I have overclocked the RAM to some 466 MHz (5:5:5:18) at 2.20V (Geil DDR2-800). What I'd like to do is increase the FSB a bit higher, so that the overall system performance is better - if the CPU temps will get too high, I can go down with the multiplier to 9 or 8 (currently 10).

My question is: which voltage settings (apart from RAM already at 2.20, and Vcore that I need to leave at Auto for the above reasons) should I change in order to assure stability with FSB = 333 or higher?