EDGE 4GB DDR3 SDRAM Memory Module - For Desktop PC - 4 GB (1 x 4GB) - DDR3-1866/PC3-14900 DDR3 SDRAM - 1866 MHz - 1.50 V - ECC - Registered - 240-pin - DIMM - Lifetime Warranty

No matter how heavy and numerous the applications that you are using, 1866 MHz memory speed with Registered signal will run them smoothly 4 GB memory smoothly executes complex apps and games 240-pin-pin DDR3 SDRAM interface multiplexes 2-bit data from memory cell and I/O buses to minimize processor idle time and enhance your computers performance