Faster Performance for Everyday Use; Always be in High Acceleration with TurboWrite; Unmatched Reliability for Consistently Superior Performance; Integrated Solution Utilizing Highest-Quality Components; Sleek Lightweight and Energy Efficient; At only 7mm thickness and weighing just 2 ounces the 840 EVO Series SSD has a thin lightweight design that can make your laptop lighter to carry. And because it contains no moving parts and it features an ultra-efficient design it consumes little battery power letting you enjoy up to 50 minutes more of laptop battery life than a standard hard disk drive (HDD). Features Capacity: 250GB; Controller: Samsung 3-Core MDX Controller; Memory: Samsung 19nm Toggle TLC NAND Flash; Cache: 512MB DDR2; Built-in EDC/ECC; RAID Support; Interface Type: SATA-3 (6 Gb/s interface); Form Factor: 2.5 inch at 7mm thickness; Weight: 53g (1.92 ounces); Shock Resistant: 1500G; 1.5 Million Hours Life Expectancy (MTBF); Support for TRIM command in Windows 7 and Windows 8; Free Samsung SSD Magician software; Performance: Maximum sequential read speed: up to 540 MB/s; Maximum sequential write speed: up to 520 MB/s; Random 4k READ: up to 97000 IOPS; Random 4k WRITE: up to 90000 IOPS; Stutter Free - Samsung controller ensures smooth performance