Internal ssd solid state drive series samsung 850 series capacity 250 gb form factor 25 inch height 68 mm design internal memory type 3d v nand bus sata iii sata 600 bus speed 6 buffer 512 mb ram type ddr3 read speed 540 mbs write speed 520 mbs mtbf 1 500 000 hours shock resistant up to 1 500 g vibration resistant up to 2 g features device sleep trim support smart garbage collection controller samsung 3 core mgx weight 39 g power