128GB (4 x 32GB) DDR4-2666MHz PC4-21300 SO-DIMM Memory for Apple 27" iMac with Retina 5K Display Mid 2020 (iMac 20,1 iMac 20,2) by NEMIX RAM System Specific Memory - Newegg.com
G.SKILL TridentZ RGB Series 128GB (4 x 32GB) 288-Pin PC RAM DDR4 3600 (PC4 28800) Desktop Memory Model F4-3600C18Q-128GTZR Desktop Memory - Newegg.com
HyperX Fury 128GB 3200MHz DDR4 Ram CL16 DIMM (Kit of 2) Black Desktop Memory with Low-Profile Heat Spreader : Amazon.in: Computers & Accessories