G.Skill Ripjaws Series 8GB (2 x 4GB) 204-Pin DDR3 SO-DIMM 1600 (PC3L 12800) Laptop Memory F3-1600C11D-8GRSL 8GB G.Skill Ripjaws DDR3 Laptop upgrade kit Consists of 2x 4GB single modules, 204 pins 1600MHz PC3-12800 SO-DIMM Timings of CL11 (11-11-11-28) at 1.35V Low-voltage 1.35V memory kit