I am a bit confused about the P4SDX. AnAndTech's review says it has SATA and some other features, however the ASUS website does not list these features. The only thing I can figure out is that the difference is between the P4SDX and the P4SDX Deluxe, but ASUS does not list any information bout a P4SDX deluxe and I can find no information about it except from Anandtech. Where can I buy the P4SDX and how do I know which I am getting? Thanks