Samsung Electronics 840 EVO-Series 500GB 2.5-Inch SATA III Single Unit Version Internal Solid State Drive MZ-7TE500BW 4KB Random Read: Up to 98,000 IOPS Controller: Samsung 3-core MEX Sustained Sequential Read: 540MB/s Sustained Sequential Write: 520MBps 4KB Random Write: Up to 90,000 IOPS Used For: Consumer MTBF: 1,500,000 hours Height: 6.8mm