Apple iMac Pro, 18 Core, Intel Xeon W 2.3 GHz, 128GB RAM, 1TB SSD, Ret – Pc Retro Shop
Memory Upgrades for 2019-2020 iMac 27-Inch - Up to 128GB
Apple iMac All-in-One Desktop 27-inch (5K) 3.6GHZ 8-Core i9 (2019) 4TB HD & 128GB RAM-Mac OS/Win 10 Pro (Refurbished) - Walmart.com
Apple A Grade Desktop Computer 27-inch iMac A2115 2019 MRR02LL/A 3.6 GHz Core i9 (I9-9900K) 128GB RAM 2TB HDD Storage Mac OS Include Keyboard and Mouse - Walmart.com
How to: 27-inch 5K iMac (2019) 128GB RAM Upgrade - Save $$$! - YouTube
It's Official: 2019 27" iMac can take 128GB of RAM | MacRumors Forums