Crucial Ballistix MAX RGB 4000 MHz DDR4 DRAM Desktop Gaming Memory Kit 16GB (8GBx2) CL18 BLM2K8G40C18U4BL (BLACK) - Newegg.com
VENGEANCE RGB PRO SL 32GB (2 x 16GB) DDR4 DRAM 4000MHz C18 Memory Kit – Black
CORSAIR VENGEANCE RGB PRO 16GB (2x8GB) DDR4 4000MHz C19 LED Desktop Memory - Black at Amazon.com
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM DDR4 4000 (PC4-32000) CL18-22-22-42 1.35V Dual Channel Desktop Memory Model F4-4000C18D-16GTZRB at Amazon.com