well ,its sometimes wierd, i tried a 6850 in a giga p35 ds4 and giga x38 .
the same 6850 did 540fsb on p35 and only 500 on x38 .though i could op the multipler on the x38 ending getting same oc .
dinos your giga x38 is also just one of the few ,that ive seen with such high fsb.wonder how the new 8### serie cpues runs best combo ? p35 or x38 ?