Capacity:128 GB The XPG (Xtreme Performance Gear) SX900 solid state drive uses new optimized firmware to utilize greater storage capacity of the NAND Flash components. With superior NAND Flash technology, the XPG SX900 SSD reaches new levels of stability and performance with expanded capacities. Utilizing the SandForce 2281 controller, the SX900 512 GB SSD boasts a 7% increase over common SSD's in the market today. A milestone in ADATA's history of NAND Flash product brought to you. With maximum sequential read and write speeds of 550/530 MB per second and maximum random 4K write speeds as high as 85,000 IOPS, the ADATA XPG SX900 SSD is poised to take its place as a market and performance leader!