Thank you much rafi and AdamK for the answers The Z77 only has (2) 6Gb/s Intel SATA ports, the other (2) 6Gb/s ports are inferior Asmedia ports. If you want full performance, like Simon100 said, you'll want to get a dedicated RAID controller, even the onboard Intel controller uses software emulation and offloads to the CPU giving you reduced speeds. This is what a proper RAID controller looks like http://www.newegg.com/Product/Product.aspx?Item=N82E16816117214