To follow up its success with the SSD 840 EVO, though, Samsung released the SSD 850 EVO, putting it out first in the traditional 2.5-inch form factor. It was an all-new drive that used first-to-market 3D NAND that first appeared in the company's flagship consumer-grade SSD, the SSD 850 Pro. (Samsung's competitors, notably Toshiba and Intel/Micron, are coming to market with similar 3D technologies, too, mind you.) In the simplest terms, this means the NAND chips mustn't necessarily be laid side-by-side or end-to-end like the center strip of paint on a road, but rather, at the manufacturing level, can be layered on top of each other. This allows Samsung to compress more NAND in a smaller space, which in turn reduces manufacturing costs and makes possible higher capacities in smaller form factors.ĭoing so also allows Samsung to increase the size of the fabrication node instead of shrinking it, so it's gone from a 19nm process on the SSD 840 EVO to a 40mm process in the SSD 850 EVO. This change might seem counterintuitive, and a move backward, but this actually increases endurance and performance. Together, the benefits of this new technology are easy to sum up: more speed and more life, at a lower cost. The 2.5-inch version of the Samsung SSD 850 EVO also made use of a new controller dubbed MGX (at least in its 120GB, 250GB, and 500GB models the 1TB version of the drive used Samsung's existing MEX controller). The drives came with a class-leading five-year warranty as well. So much for the "ordinary" 2.5-inch drives. Here on March 31, 2015, Samsung revealed the SSD 850 EVO in two new form factors: M.2 and mSATA. Passmark diskmark innodisk m.2 128gb free#.
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