Used 2012 Apple iMac 27" Core i5 3.2GHz 8GB RAM 1TB HDD MD096LL/A - Walmart.com
Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
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
Apple iMac 2012 (Late) 21.5-inch (iMac 13,1) SSD ,Ram & OSX Upgrades - ZD Laptop Service Centre