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
4GB -2x2GB Memory Ram Upgrade 20" Apple iMac-8.1 2.4GHz Core 2 Duo Early 2008 | eBay
apple-history.com / iMac (Early 2008)
Apple iMac 8.1 20 Inch All in One Computer 2ghz Intel Core 2 Duo A1224 for sale online | eBay
iMac - Wikipedia
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