Good Condition Apple iMac Early 2008, 250GB Storage, 5GB RAM, 2.4GHz | eBay
iMac Memory for Model 8.1 | DDR2-800MHz |4GB | MacMemory.com
Install memory in an iMac - Apple Support
6GB Memory for 2007-2008 MacBook Pro, MacBook, and iMac
Install memory in an iMac - Apple Support
Install memory in an iMac - Apple Support
A-Tech 8GB (2 x 4GB) PC3-8500 DDR3 1066/1067 MHz RAM for MacBook, MacBook Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) | 204-Pin SODIMM Memory Kit at Amazon.com
iMac (Early 2008) RAM Upgrade - YouTube
Timetec 8GB KIT(2x4GB) Compatible for Apple DDR3 1067MHz / 1066MHz PC3-8500 CL7 for Mac Book, Mac Book Pro, iMac, Mac Mini (Late 2008, Early/Mid/Late 2009, Mid 2010) SODIMM Memory MAC RAM Upgrade