VENGEANCE® Series 16GB (1 x 16GB) DDR4 SODIMM 2666MHz CL18 Memory Kit
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-25600) DDR4 3200 CL16-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3200C16D-16GTZR at Amazon.com
Crucial 16GB Kit (2 x 8GB) DDR4-2666 SODIMM Memory for Mac | CT2K8G4S266M | Crucial.com