Kingston ValueRAM 4GB DDR3 SDRAM Memory Module - For Desktop PC - 4 GB (1 x 4 GB) - DDR3-1600/PC3-12800 DDR3 SDRAM - CL11 - 1.35 V - Non-ECC - Unbuffered - 240-pin - DIMM

No matter how heavy and numerous the applications that you are using, 1600 MHz memory speed with Unbuffered signal will run them smoothly DIMM 4 GB memory smoothly executes complex apps and games 240-pin-pin DDR3-1600/PC3-12800 interface synchronizes electrical and clock signals for an efficient data transfer rate