Rege is right and also the silent pipe is different on the DQ6. All copper including the underside of the mobo. Also X38 has true 2 x PCI-E x16 support P35 has 1 x PCI-E x 16 and 1 x PCI-E x 4.
(And as we have found on the second viddy card in PCI-E it disables the other PCI-E ports under P35)
__________________ "People who live in glass houses shouldn't cast stones"