Amazon.com: Crucial 8GB Single DDR4 2666 MT/s (PC4-21300) SR x8 DIMM 288-Pin Memory - CT8G4DFS8266 : Everything Else
G.Skill Ripjaws V Series 32GB (2 x 16GB) 288-Pin SDRAM (PC4 21300) DDR4 2666 CL15-15-15-35 1.20V Dual Channel Desktop Memory Model F4-2666C15D-32GVR at Amazon.com
Team Group T-Force Nighthawk White LED DDR4-2666 CL15 16 GB Internal Memory Kit at Amazon.com
Amazon.com: AddOn 4GB DDR4 SDRAM Memory Module - for Desktop PC - 4 GB (1 x 4 GB) - DDR4-2666/PC4-21300 DDR4 SDRAM - CL15-1.20 V - Non-ECC - Unbuffered - 288-pin - DIMM : Electronics