Corsair Vengeance Pro Series 16GB (2x8GB) DDR3 1600 MHZ (PC3 12800) Desktop Memory 1.5V, Black at Amazon.com
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
Corsair Vengeance Pro Series - 16GB (2 x 8GB) DDR3 DRAM 1866MHz C9 Memory Kit (CMY16GX3M2A1866C9R)(Red) at Amazon.com