Specification size 4gb kit 1 x 4gb performance profile none fan included no memory type ddr3 memory pin 204 memory format sodimm tested voltage 15 spd voltage 15 speed rating pc3 12800 1600mhz spd speed 1333mhz tested speed 1600mhz tested latency 11 11 11 30 spd latency 9 9 9 24 support limited lifetime manufacturer warranty