I have a question about some interesting behavior on this board: my raid array works with the bios set to ahci. If I enable raid on the board, my old os install didn't boot due to the missing driver, and a fresh install wouldn't work for the same reason; I didn't bother loading the raid driver. I installed a fresh os in ahci mode, and after installing the intel rapid storage driver, my raid array came online. Its really for the best as I don't have to wait for that raid bios screen during the post, and there doesn't seem to be anything wrong performance wise. Its just a bit confusing.