Kingston ValueRAM 4GB DDR3 SDRAM Memory Module - For Desktop PC - 4 GB (1 x 4 GB) - DDR3-1600/PC3-12800 DDR3 SDRAM - CL11 - 1.50 V - Non-ECC - Unbuffered - 240-pin - DIMM

Up to 1600 MHz speed for smooth computer performance 4 GB memory allows you to have more programs open at a time 240-pin-pin DDR3-1600/PC3-12800 interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computers performance