Seagate has introduced the world's first and only hard drive that supports the SATA 6Gb/s standard with the release of the Barracuda XT 2TB drive. Along with this drive, Seagate has two more 2TB drives in its arsenal that are aimed for the low power and mainstream users, having less cache and a slower spindle speed. The Barracuda XT 2TB drive comes equipped with 4 platters, 64MB of cache and a 7200 RPM spindle speed with a sustained data rate of 138 MB/s. All pretty impressive specs for a drive of this size that should help this drive run straight to the top of the heap of performance mechanical hard drives. But speed is only one part of the equation. As we keep ever increasing amounts of data on our computers, the need for additional capacity continues to rise, along with the quality of the media we store on the PC, from music to movies to games and more. More space is a need that will be filled. The share of computers with 1+TB drives continues to increase each year. The Barracuda XT is a drive that is aimed at the hardcore user, gamer, and video editing professionals. Let's see how this drive performs and find out if it it really is the fastest mechanical hard drive out on the market.