Corsair Vengeance Blue 16GB (2x8 GB) DDR3 1600MHz (PC3 12800) Desktop Memory 1.5V 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
A-Tech 16GB KIT (2 x 8GB) for Dell PowerEdge Series C5220 C6100, C6105, R210 II, R320, R415 DIMM DDR3 ECC Unbuffered PC3-8500 1066MHz Server RAM Memory at Amazon.com