G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com
G.SKILL Ripjaws Series 16GB (2 x 8GB) 204-Pin DDR3 SO-DIMM DDR3L 1600 (PC3L 12800) Laptop Memory Model F3-1600C9D-16GRSL Laptop Memory - Newegg.com
G.SKILL Ripjaws X Series 16GB (2 x8GB) DDR3 RAM 1600MHz (F3-1600C9D-16GXM) | eBay