SEAGATE Barracuda XT 3.0 TB 7200RPM SATA 6Gb/s 64MB Cache 3.5-Inch Internal Hard Drive for PC and Mac - Retail Kit ST330005N1A1AS-RK Massive 3TB capacity provides plenty of room for downloading today's storage-craving PC games or storing many hours of high-definition video content. The first comprehensive, non-hardware solution to accessing 3TB capacity by using Seagate DiscWizard software The 7200-RPM performance platform complements high capacity, delivering a powerful combination of extreme storage and top-end desktop performance. A 64MB cache optimizes burst performance and reduces data throughput bottlenecks. The SATA 6Gb/s interface enables the use of the industry's newest and fastest hard drive controllers while providing backward compatibility to legacy SATA 1.5Gb/s or 3Gb/s systems.