Patriot Torqx 2 Series 256 GB SATA II 2.5-Inch Solid State Drive (SSD) PT2256GS25SSDR Sequential Read: up to 270MB/s and Sequential Write: up to 230MB/s Interface: SATA I/II Supports RAID and TRIM (O/S dependent) 128MB DRAM Cache O/S Support: Win XP/Vista/7/Linux Sequential Read: up to 270MB/s and Sequential Write: up to 230MB/s Interface: SATA I/II Supports RAID and TRIM (O/S dependent) 128MB DRAM Cache O/S Support: Win XP/Vista/7/Linux 3 Year Warranty Based on internal ATTO Disk Benchmark testing Capacities stated are unformatted. The total formatted capacity for the drive will differ, depending on the operating system and file system used.