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
2GB Memory (PC3-12800, DDR3 1600MHz) for Apple MacBook Pro 15 inch A1286 Mid 2012. iMac 21.5 inch A1418 Late 2012, A1418 MacMini A1347 - Late 2012
Install memory in an iMac - Apple Support
Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Harder, better, faster, stronger: A review of the 27-inch iMac | Ars Technica
16GB (2x8GB) RAM Memory Upgrade For Apple iMac 27'' A1419 Late 2012 2013 | eBay
Apple iMac 27-inch (Late 2012) - Review 2012 - PCMag UK
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
OWC 16GB (2x8GB) ram Upgrade PC3-12800 DDR3L 1600MHz sodimm 204 Pin CL11 Memory Upgrade Kit Compatible with Late iMac, Mac Mini, and MacBook Pro Computer at Amazon.com