The long awaited Sata 3 interface is finally here. The new interface promises to offer twice the bandwidth of the older Sata 2 interface. Currently hard drives don't challenge the Sata 2 bandwidth unless your talking Raid arrays. More than likely SSD Raid arrays. Seagate estimates that within 2 - 3 years we will need the additional bandwidth that Sata 3 offers but the fledgling technology is here now.
We have the flagship Gigabyte P55A-UD6 with Sata 3 and USB 3.0 and a Seagate Barracuda XT...