Solid State Drive technology has been revolutionary in that it delivers a very noticeable performance boost that surpasses upgrades to other components. As a result, companies who offer SSDs typically spend small fortunes marketing them to the consumer public. Samsung goes a different route, and relies on proven performance to sale units. This was especially true for the Samsung SSD 840 PRO, which generated its own interest by producing impressive transfer speeds. Powered by their own 32-layer 3D V-NAND technology, the Samsung SSD 850 PRO replaces the 840 PRO solid state drive and delivers up to twice the density and write speed of traditional 20nm planar NAND flash components. In this article, Benchmark Reviews tests the 256GB Samsung SSD 850 PRO against the fastest solid state drives available.