Kingston is the industry leader in PC memory. Our line of HyperX desktop memory is ideal for PC enthusiasts and gamers. You want the highest performance and speed you need HyperX memory from Kingston. Included in package are two 2GB Modules of 1866MHz DDR3 Non-ECC CL9 XMP desktop memory. Specs include Standard 256M x 64 Non-ECC 1866MHz 240-pin Unbuffered DIMM (DDR3, 1.65V, CL9, FBGA,Gold).