Today we have the new ADATA SD700 256GB External Solid State Drive on the BCCHardware test bench. This drive is part of ADATA's rugged line of drives and uses new 3D NAND (stacked TLC flash) to help keep the costs down and the performance quite high.
Decent Read/Write performance on tested USB 3.0 (not USB 3.1) hardware; Included software suite (HDDtoGo) is useful; Rugged enclosure; Lightweight
Performance of USB 3.0 is 640MBps; but drive tops out at 440MBps