Amazon.com: Apple iMac 27-Inch Desktop, 3.4 GHz Intel Core i7 Processor, 16 GB memory, 1TB HDD (Renewed),macOS High Sierra : Electronics
Apple iMac 2012 (Late) 27-inch 2K (iMac 13,2) SSD ,Ram & macOS Mac OS X OSX Upgrades - ZD Laptop Service Centre
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com
Install memory in an iMac - Apple Support
Apple iMac (Late 2012) review (21.5- and 27-inch) | Macworld
Apple iMac (Late 2012) review (21.5- and 27-inch) | Macworld
32GB iMac Memory for 27-inch Late 2012 to Mid 2015 Models 13,2 14,2 and 15,1 (8GBx4)
A-Tech 8GB Kit (2x4GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com