Factory Original 64GB (2x32GB) Memory Upgrade for 2020 & 2019 Apple iMac 27" w/Retina 5K Display & 2018 Apple Mac Mini DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v RAM Adamanta at Amazon.com
Can you upgrade the RAM in the 27-inch iMac? | iMore
Factory Original 64GB (2x32GB) Memory Upgrade for 2020 & 2019 Apple iMac 27" w/Retina 5K Display & 2018 Apple Mac Mini DDR4 2666Mhz PC4-21300 SODIMM 2Rx8 CL19 1.2v RAM Adamanta at Amazon.com
How To Upgrade RAM in a Mac | Macworld
Install memory in an iMac - Apple Support
A-Tech 16GB (2x8GB) RAM For 2019 IMac 27 Inch Retina 5K, 2018 Mini DDR4 2666MHz | eBay
iMac Pro Teardown Highlights Modular RAM, CPU and SSD Along With Redesigned Internals - MacRumors
Apple iMac Pro 27-inch 3.2GHz Intel 8-Core / 64GB RAM / 4TB SSD / Vega 56 8GB | eBay
Amazon.com: Apple iMac MNE92LL/A 27 Inch, 3.4 GHz Intel Core i5, 8GB RAM, 1TB Fusion Drive, Silver (Renewed), Mac OS : Electronics
Apple 27" iMac with Retina 5K Display (Mid 2017) Z0TR-MNED43-BH
Tech 101: Order the Right Amount of Memory for Your New Mac