Samsung Electronics Extreme Low Voltage 30nm UDIMM 4 Not a kit (Single) DDR3 1600 (PC3 12800) 240-Pin DDR3 SDRAM MV-3V4G3/US Backed by a limited lifetime warranty Very Low Profile--two-thirds as wide as conventional memory modules Compatible with PC3-12800, PC3-10600, PC3-8500, PC3-6400 memory solutions Add 4 GB of memory to your DDR3-compatible desktop or server Extreme low voltage--high performance with very low energy consumption for superior overclocking without large and expensive heatsinks Add 4 GB of memory to your DDR3-compatible desktop or server Compatible with PC3-12800, PC3-10600, PC3-8500, PC3-6400 memory solutions Extreme low voltage--high performance with very low energy consumption for superior overclocking without large and expensive heatsinks Very Low Profile--two-thirds as wide as conventional memory modules Backed by a limited lifetime warranty 100% genuine Samsung components individually tested and certified From the #1 manufacturer of DRAM in the World