Internal ssd solid state drive series samsung 840 evo series capacity 250 gb form factor 25 inch height 7 mm design internal memory type tlc bus sata iii sata 600 bus speed 6 buffer 512 mb ram type lpddr2 read speed 540 mbs write speed 520 mbs mtbf 1 500 000 hours shock resistant up to 1 500 g features garbage collection smart trim support controller samsung 3 core mex weight 53 g power consumption idle 004 watt power consumptio