Design and capacity Though available in the 2.5-inch form factor, WD sent us the M.2 2280 (22mm wide/80mm long) Blue 3D, which is handy for upgrading laptops or desktops that feature an M.2 slot.

We can’t say the WD Blue and SanDisk Ultra with 3D NAND technology are must-have drives. They compete directly with similar drives like the Crucial MX300 series and Mushkin Enhanced Reactor series.