64GB Memory Upgrade for 2019-2020 Apple iMac and 2018 Mac mini
32GB NEMIX RAM Memory for 2019 Apple iMac 27 inch Retina 5K (iMac19,1 A2115), 2018 Apple Mac Mini (Macmini8,1 A1993) System Specific Memory - Newegg.com
Amazon.com: Early 2019 Apple iMac with 3.0GHz 6-core Intel Core i5 (27 inch Retina 5K, 32GB RAM, 1TB) Silver (Renewed) : Electronics