G.Skill Ripjaws V 32GB (2 x 16GB) DDR4 4000 MHz CL16 288-pin DIMM Black Memory (F4-4000C16D-32GVKA) - Bleepbox
CORSAIR VENGEANCE PRO 16 GB (2PK x 8GB) 4000MHz DDR4 C18 DIMM Desktop Memory with RGB lighting Black CMW16GX4M2Z4000C18 - Best Buy
G.SKILL Launches New DDR4-4000 CL16 Memory Kits For Intel 10th Gen Comet Lake-S | HotHardware
G.Skill Trident Z RGB 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-32GTZR at Amazon.com