On a random read, the 470 Series offers up to up to 25,000 IOPS (Input/Output Operations Per Second). On a random write, up to 7,000 IOPS. This Serial ATA solid state drive offers an up to 3Gbps data transfer rate. The DRAM of the Samsung 470 Series houses the block placement and wear leveling directory, keeping your data safe and easily accessible. The hard shell case of this solid state drive is made of composites that insulate the internal components from shock, dust and corrosion. There are size options available for the Samsung 470 Series solid state drive, from 64GB to 256GB.