4GB (2GBx2) Team High Performance Memory RAM Upgrade For iMac “Core 2 Duo” 2.16 24-Inch MA456LL iMac 6,1 1. The Memory Kit comes with Life Time Warranty. at Amazon.com
CMS 4GB (1X4GB) DDR2 6400 800MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with Apple® iMac Core 2 Duo 2.4 20-Inch Early 2008 - A42 at Amazon.com
Just picked up this 2006 iMac A1195 - 1.83 GHz Intel Core 2 Duo| 2GB Ram...any idea if I can upgrade it at all? : r/mac
Install memory in an iMac - Apple Support
Apple iMac 3.0Ghz Core 2 Duo 21.5-Inch (Late-2009) *No HDD/RAM* – MSU Surplus Store
Apple iMac 21.5" All In One Computer Core 2 Duo 3.06GHz 8GB 500GB Mac OSX El Capitan and WIFI