Well Im having endless issues with this rig, but some of it is definately related to my later style ram. Why is it I can get them to 1575-8-8-8 at any fsb up to 460 but at 470 I get C1 fail on POST? Yet with less emphasis on ram I have had it up to 560mhz fsb (but 8x multi) and 1344mhz ram speed (they are Kingston T1 Hyper-X 2000)