8GB 16GB 24GB OR 32GB RAM DDR3 PC3-12800 CL11 240-PIN DIMM KVR16N11/8 for AMD (16GB DDR3) 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