8GB G.Skill Ripjaws DDR3 1866MHz SO-DIMM laptop memory dual channel kit (2x 4GB) CL10 8GB G.Skill Ripjaws DDR3 Laptop upgrade kit Consists of 2x 4GB single modules, 204 pins 1866MHz PC3-14900 SO-DIMM Timings of CL10 (10-10-10-32) at 1.35V Low-voltage memory kit