nVIDIA Quadro K1100M 2GB MXM Metal Video Card for iMac 11,1 / 11,2 / 11,3 / 12,1 / 12,2 A1311 A1312 Late 2009 / Mid 2010 / 2011 - AliExpress
Apple iMac review (2023): Nothing's changed, except the M3 | Engadget
Timetec 16GB KIT(4x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 Dual Rank for iMac (Late 2009 21.5-inch / 27-inch) SODIMM Memory MAC RAM Upgrade for iMac 10,1 and iMac 11,1 at Amazon.com
Apple iMac A1419 27" MD096LL/A Intel i5 3.2GHz 8GB RAM -1TB HD -Catalina | eBay
Restored Apple MA876LL/A All-in-One iMac with Intel Core 2 Duo Processor, 4GB Memory, 20" Display, 250GB Hard Drive and Mac OS X 10.11 El Capitan (Refurbished) - Walmart.com