Crucial M4 2.5 512GB SATA III MLC Internal Solid State Drive (SSD) CT512M4SSD2 4KB Random Read: Up to 45,000 IOPS Controller: Marvell Sustained Sequential Read: Up to 500MBps (SATA 6Gbs); 265MBps (SATA 3Gbs) Sustained Sequential Write: Up to 260MBps (SATA 6Gbps) 4KB Random Write: Up to 50,000 IOPS Power Consumption (Active): 0.28W Power Consumption (Idle): Max Shock Resistance: 1500G