ok, so as you know we're looking at a huge $700 difference here.. i dont know if the price difference is worth it. what would you guys do? i hear the q6600 is easily overclockable to 3ghz on air. but is that without the hassle of messing with voltage? since the multiplier is locked, has anyone run into issues when increasing the fsb speed? also, how much can i overclock the 6850 without some crazy cooling system and voltage tinkering?