I have noticed that when I try to crank my PCIE Frequecy up to give my card more juice that the Intel Raid controller stops working what's up with that? I crank it up to 125 when this happens. I have the EX X38 DQ6 and I have left my Bios at the default revision as well as far as the last question goes so, I don't know what difference it will make if any but, their site says it fixes Overclocking stability and memory performance issues but, mine seems to be ok so far IMO.