Kingston is the industry leader in PC memory. Our line of HyperX notebook 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 4GB Modules of 1600MHz DDR3 notebook/netbook memory. Specs include 512M X 64 Non-ECC 1600MHz 204-pin Unbuffered SODIMM (DDR3, 1.5V, CL9, Gold).