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 thick 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: 120GB Controller: Samsung 3-Core MDX Controller Memory: Samsung 19nm Toggle TLC NAND Flash Cache: 256MB 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 410 MB/s Random 4k READ: up to 94000 IOPS Random 4k WRITE: up to 35000 IOPS Stutter Free - Samsung controller ensures smooth performance