Seagate today updated the Barracuda line to include the industry's first drive to use an 6Gbps SATA interface. The 2TB Barracuda XT has twice as much theoretical bandwidth as existing SATA II drives and gives the disk up to 600MBps in burst transfers. In actual speed, the drive is still fast with a 140MBps sustained transfer rate and is helped by Seagate's first use of 64MB of onboard cache for a mainstream drive.
