2012 2013 2014 Apple Imac 5k 27 Inch Memory Ram 4gb 8gb 16gb 32gb Ddr3 1600 - Rams - AliExpress
Apple iMac 21.5" Late 2013 - Core i7 3.1GHz 16GB RAM 1TB - Very Good Condition | eBay
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
USED 2013 Apple iMac 27" Core i5 3.4GHz 8GB RAM 1TB HDD ME089LL/A - Walmart.com
Apple iMac review (2013) | Engadget
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
A-Tech 32GB Kit (4x8GB) RAM for Apple iMac (Late 2012, Late 2013, Late 2014, Mid 2015) | DDR3 1600MHz SODIMM PC3-12800 204-Pin SO-DIMM Max Memory Upgrade at Amazon.com