Apple iMac 27" - Core i5 10th gen, 8GB 2666 DDR4, 256GB SSD, MacOS | GCOM IT PLACE
Timetec 32GB KIT(2x16GB) Compatible for Apple DDR4 2666MHz / 2667MHz for Mid 2020 iMac (20,1/20,2) / Mid 2019 iMac (19,1) 27-inch w/Retina 5K, Late 2018 Mac Mini (8,1) PC4-21333 /PC4-21300 MAC RAM at Amazon.com
DDR4 | 2017 iMac | 32GB | SO-DIMM | iMac Memory
iMac 2017 RAM update, running smoothly on 3200MHz DDR4, higher than 2400MHz Recommendation : r/mac
Genuine Apple 16GB Ram Module PC4-2400T DDR4-19200 PC4-2400T-SB1-11 For iMac | eBay
Apple iMac MXWT2LL/A (2020) 27" All-in-One, 27" 5k Retina Display; Int – JBBwell