Seagate 2TB Barracuda SATA 3 6Gbps Review
 

Testing has confirmed that the latest drive from Seagate does offer a slight performance boost, but not what you would think from the latest technology. It's not a Eureka moment! However, Seagate has even said that the technology is early and performance will increase in the future as the technology matures and operating systems and applications are optimized for the technology. That being said, the 2TB Barracuda finished ahead of the last generation Seagate 7200.11 1.5 TB drive in just about every category when attached to both interfaces.

http://www.overclockersclub.com/reviews/seagate_2tb/