8GB Memory Upgrade for Dell Vostro 3580 1Rx8 Compatible RAM DDR4 2666MHz SODIMM (PARTS-QUICK Brand) at Amazon.com
Corsair Vengeance LPX 16GB (2 X 8GB) DDR4 3200 (PC4-25600) C16 1.35V Desktop Memory - Black at Amazon.com
G.Skill Trident Z RGB Series 16GB (2 x 8GB) 288-Pin SDRAM (PC4-28800) DDR4 3600 CL17-18-18-38 1.35V Dual Channel Desktop Memory Model F4-3600C17D-16GTZR at Amazon.com