A-Tech for Apple 6GB Kit (1x2GB 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
Apple upgrades its 27" iMac with 10-gen Intel CPUs, new AMD GPUs and doubles RAM capacity: Digital Photography Review
The 27-inch Apple iMac Review (2011)
OS X El Capitan on an Older Mac: What You Should Know
iMac 20inch Mid-2007
6GB Memory for 2007-2008 MacBook Pro, MacBook, and iMac
How I kept my iMac running for a decade | Cult of Mac
MemoryMasters 6GB (4GB + 2GB Memory Upgrade Kit) Memory RAM for Apple iMac 2007 7,1 at Amazon.com
Mid 2007 iMac Upgrade. MAX Specs,SSD,And Catalina! - YouTube
iMAC 20" mid 2007 w el Capitain, 6GB Ram, 320GB HDD /READY TO GO../good working! | eBay
Apple iMac 24" 2.4 GHz Intel Core 2 1TB Storage 6GB RAM for Sale in Frisco, TX - OfferUp
iMac Intel 20" EMC 2133 and 2210 Repair - iFixit
Memory Upgrades for Apple iMac 2007 - Up to 6GB
The infamous 2007 iMac on Catalina | MacRumors Forums
Apple iMac A1225 24" Core 2 Duo E8135 2.66GHz 6GB DDR3 RAM 640GB HD OS 10.8.5 | eBay
How to Upgrade iMac RAM (20" and 24" Aluminum): EveryMac.com
A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com
A-Tech for Apple 6GB Kit (1x2GB + 1x4GB) DDR2 667MHz PC2-5300 200-pin SODIMM for MacBook (Late 2007, Early 2008, Early 2009), MacBook Pro (Mid 2007, Early 2008), iMac (Mid 2007) - Memory RAM Upgrade at Amazon.com