The overclocking guide is fantastic... tons of useful info. There's a feature on the EVGA 750i board that I'm a little unclear on; that is "unlinking" the FSB and DRAM speeds. I'm running the stock cooler for the Q9550; I can jump the FSB to 1600 and lower voltage to run around 70C in that config. With the "unlinked" setting I can set the DRAM to 1066 (I have DDR2 8500 to support it).
The only weird thing I've noticed it that it seems to automatically adjust the multiplier to 8 instead of 8.5.
So, first, does having a odd FSB/memory ratio result in sub-optimal performance, and is there any reason the multipler resets to something different?