yeah, many motherboards have two RAID controllers built into them now. One is in the Intel southbridge, the other is the Marvell controller. To the best of my understanding, they're software driven, so not quite as good as an actual hardware RAID controller, but good enough for home user purposes. The difference will be in how many disks it allows you to RAID. The Marvell controller probably only has two SATA ports, while the Intel has 6.