G.Skill Ripjaws 32GB 2 x 16GB DDR4-2666 PC4-21300 CL18 Dual Channel SO-DIMM Memory Kit F4-2666C18D-32GRS - Micro Center
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
G.Skill Trident Z Royal Series [Silver] 32GB (2 x 16GB) 288-Pin SDRAM (PC4-28800) DDR4 3600 CL19-20-20-40 1.35V Dual Channel Desktop Memory Model F4-3600C19D-32GTRS at Amazon.com