Samsung is updating its mainstream NVMe SSD with a new generation of 3D NAND that brings improved performance and power efficiency. The new Samsung 970 EVO Plus keeps the same controller as last years 970 EVO, but the upgrade to 96-layer 3D TLC NAND is important enough to deserve the new product name. In our review, weve been testing the 250GB and 1TB NVMe M.2 models.