The A7V133 actually supports RAID 0 or 1, but not 0+1. The A7V had a promise controller that only acted as an extra IDE interface, it was upgraded for the KT133A board.
AMDPwred: You might as well get the 8K7A+ in my opinion, the cost isnt great and you can always use the 2 extra interfaces for regular ATA operation if software RAID isnt your thing.