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
Kingston HyperX FURY 8GB 1866MHz DDR3 CL10 DIMM - Black (HX318C10FB/8) at Amazon.com
HyperX 8GB Kit (2x4GB) 1600MHz DDR3 PC3-12800 CL9 DIMM Desktop Memory, Black KHX16C9B1BK2/8 at Amazon.com