The Crucial MX300 solid state drive features a 275GB capacity, SATA 6.0Gb/s, up to 530 MB/s read speeds and up to 500 MB/s write speeds. Increase the speed, durability, and efficiency of your system for years to come with the Crucial MX300 SSD. Boot up in seconds and fly through the most demanding applications with an SSD that fuses the latest 3D NAND flash technology with the proven success of previous MX-series SSDs.