Transcend's SATA III 6Gb/s SSD220S uses the latest 3D NAND technology that features vertical, stacked expansion of storage cells. By using high-quality flash memory and enhanced firmware algorithms, the SSD220S delivers greater performance and reliability.3D expansion to break through limitsUnlike planar NAND memory, 3D NAND flash features memory cells stacked certically in multiple layers. 3D NAND overcomes density limitations of 2D planar NAND and delivers a higher level of performance and endurance.Performance boost for everyday computingTaking full advantage of the SARA III 6Gb/s interface and built-in SLC caching technology, Transcend's SSD220S achieves exceptional transfer speeds of up to 550MB/s read and 500MB/s write.Guaranteed endurance and reliabilityTranscend's SSD220S offers great Terabytes Written (TBW) values (up to 320 TB) indicating the total amount of data you can write onto the drive over it's lifetime.A better choice than HDDSolid-state drives dominate the marketing for PC upgrades because they are faster and lighter than hard disk drives. SSDs also feature less power, create less noise when in operations, and are more shock-resistant than traditional hard drives.3 easy steps to upgrade your PCTranscend's SSD220S measures just 6.8mm in height and features short access times, making it a perfect choice for upgrading desktops, laptops and the latest gaming consoles in just 3 easy steps!SSD Scope softwareTranscend SSD Scope is advanced, user-friendly software thatmakes it easy to ensure your Transcend SSD remains healthy, and continues to run fast and error-free by determining the conditions and optimizing the performance of your drive.Guaranteed qualityTranscend's solid state drives are built to the highest standards, are rigorously tested and offer outstanding quality, performance and reliability.