Samsung 830-SERIES 256GB 2.5in SATA III Mlc Internal SSD Hard Drive - Samsung MZ-7PC256B/WW Capacity: 256GB. Drive Type: SSD. Form Factor: 2.5 inch. Interface: SATA3 (SATA 6Gbits/s). Memory Type: Toggle DDR 2xnm class NAND Flash. Sequential Read Speeds: 520 MB/s. Sequential Write Speeds: 160 MB/s. Random Read Speeds: 80,000 IOPS.