Man, I just tried putting 2 x 2 Gb Crucial Ballistix (BL25664AA80A) on this board and it won't POST unless I'm running on auto memory mode which is 5-5-5-18 (2:3) @ 800 MHz. The real kick in the balls is that the Q6600 has to run @ stock (9x266)to use these DIMMs! WTF!