Crucial's C300 solid state drive introduced SSDs to the SATA-6Gb/s interface, followed by the Micron M500 SSD series which will continue in the mainstream value segment. With the Crucial M550 SSD, Micron introduces their brand's first premium-level product series. Utilizing a new Marvell 88SS9189 controller on the Crucial M550 SSD, read speeds reach 550 MB/s while write speeds attain 500 MB/s. M550 promises 90,000 random IOPS reads, and up to 85,000 random IOPS writes. 20nm Micron 64GB and 128GB NAND flash components are used in M550, which improves overall performance and enables lower-capacity drives to perform nearly as well as the higher capacity counterparts.