Viper Lair posted a review on the Seagate Barracuda 500GB 7200.9 harddisk

The Seagate Barracuda 7200.9 is a solid, but not a revolutionary entry into the crowded desktop drive market. The 16MB of cache and 3.0Gbps transfer rate aren't something users will immediately notice with all their applications, but this could easily change in the near future.

Seagate Barracuda 500GB 7200.9 Review