G.Skill Ripjaws X Series 16 GB (2 x 8 GB) 240-Pin SDRAM (PC3-12800) DDR3 1600 CL10-10-10-30 1.50V Dual Channel Desktop Memory Model F3-12800CL10D-16GBXL at Amazon.com
G.Skill Trident Z5 RGB Series 32GB (2 x 16GB) 288-Pin SDRAM DDR5 5600 (PC5-44800) CL40-40-40-76 1.20V Dual Channel Desktop Memory Model F5-5600U4040C16GA2-TZ5RS (Metallic Silver) at Amazon.com
Amazon.com: Komputerbay 16GB Dual Channel Kit 2x 8GB 204pin 1.35v DDR3-1600 SO-DIMM 1600/12800S (1600MHz, CL11) for MAC and PC : Everything Else
OLOy DDR4 RAM 8GB (1x8GB) 2400 MHz CL17 1.2V 260-Pin Laptop Gaming SODIMM for Intel (MD4S082417IZSC) at Amazon.com