Plextor M6S Series 256GB 2.5-Inch Internal Solid State Drive (PX-256M6S) Capacity: 256 GB Form Factor: 2.5 inch Interface: SATA 6Gb/s (Compatible with SATA 6/3/1.5 Gb/s) Built and optimized for real world usage, providing consistent and leading performance as one of the best upgrades to your system Greatly reduce boot-up and shut-down times, launch applications on the fly, and feel perfectly at ease opening and saving large and unwiedly files. Sequential Read Speed: 520 MB/s - Sequential Write Speed: 420 MB/S - Random Read Speed: 90,000 IOPS - Random Write Speed: 80,000 IOPS