Corsair Vengeance LPX 16GB (2x8GB) DDR4 4000 (PC4-3200) C16 1.35V Intel Optimized Desktop Memory - Black at Amazon.com
G.Skill Trident Z NEO Series 32GB (2 x 16GB) 288-Pin SDRAM DDR4 4000 (PC4-32000) CL18-22-22-42 1.40V Dual Channel Desktop Memory Model F4-4000C18D-32GTZN at Amazon.com
G.SKILL 16GB (2 x 8GB) TridentZ RGB Series DDR4 PC4-32000 4000MHz Desktop Memory Model F4-4000C17D-16GTZR at Amazon.com