The Samsung SSD 850 EVO powered by Samsung V-NAND Technology is optimized for everyday computing performance and is ideal for desktop or ultra-slim mobile computing. Unlock Your Computer's Potential Samsung's 850 EVO series SSD is the industry's #1 best-selling SSD and is perfect for everyday computing. Powered by Samsung's V-NAND technology, the 850 EVO transforms the everyday computing experience with optimized performance and endurance. Designed to fit desktop PCs, laptops, and ultrabooks, the 850 EVO comes in a wide range of capacities and form factors. *Based on 2015 NPD reported revenue in the US. Uncompromised Performance The 850 EVO optimizes performance for your daily computing tasks, boasting sequential write speeds up to 520 MB/s with TurboWrite technology and sequential read speeds up to 540 MB/s. Plus, RAPID mode to further boost performance for up to 2x faster data processing speeds by utilizing unused PC memory as cache storage. Compared to same drive w/out RAPID enabled. Capacities Range up to 4TB More storage options that are just right for your needs. Samsung offers the 850 EVO in a full range of capacities up to 4TB. With the industry's first 4TB SSD for client PCs, you can store more data on a single SSD than ever before. Multiple Form Factors for Almost Any Need Samsung has designed the 850 EVO in multiple form factors with compatibility in mind. The 2.5-inch size is designed to fit most desktop PCs and laptops, while the SATA-based M.2 and mSATA are ideal for ultra-slim mobile computing.