RAM: 16GB 3000MHz vs 3600MHz vs 4000MHz [ 9700K ]: 5 GAMES - YouTube
XLR8 Gaming EPIC-X RGB™ 4000MHz Desktop Memory
G.SKILL Conquers 4000MHz Speed Barrier and Releases New Trident Z and Ripjaws V Series DDR4 Memory - Designed for 6th Gen Intel Core Processors - G.SKILL International Enterprise Co., Ltd.
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