EDGE 8GB DDR3 SDRAM Memory Module - For Desktop PC - 8 GB (1 x 4GB) - DDR3-1600/PC3-12800 DDR3 SDRAM - 1600 MHz - 1.35 V - ECC - Registered - 240-pin - DIMM - Lifetime Warranty

No matter how heavy and numerous the applications that you are using, 1600 MHz memory speed with Registered signal will run them smoothly DIMM 8 GB of memory to heighten your computers performance DDR3 SDRAM interface synchronizes electrical and clock signals for an efficient data transfer rate