Internal ssd solid state drive series samsung 960 series capacity 250 gb form factor m2 height 238 mm design internal memory type 3d tlc bus pcie 30 x4 buffer 512 mb ram type lpddr3 interface nvme read speed 3 200 mbs write speed 1 500 mbs mtbf 1 500 000 hours shock resistant up to 1 500 g features trim support smart garbage collection ncq device sleep controller samsung polaris weight 77 g power consumption operating 53 watt