G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-16GTZR at Amazon.com
G.SKILL 16GB (4 x 4GB) Ripjaws Z Series DDR3 2133 (PC3 17000) 240-Pin Desktop Memory Model F3-17000CL11Q-16GBZL at Amazon.com
G.SKILL Ripjaws X Series 8GB (2 x 4GB) Desktop Memory, 240-Pin DDR3 SDRAM, 1600 MHz, PC3 12800 (F3-12800CL9D-8GBXL) at Amazon.com