The Seagate Barracuda XT hard drive is the industry’s first drive to support the new SATA 3.0 specification, which supports speeds up to 6Gb/s (Gigabits per second). To achieve speeds that exploit the new SATA 6Gb/s bus, your system must include a compatible SATA 3.0 compliant controller. At this time there are two companies with SATA 3.0 equipped mother boards on the market: Gigabyte and AsusTek.