Apple iMac 27" - Late 2012 Reviews, Pros and Cons | TechSpot
Apple iMac 27-Inch (2012) Review - SlashGear
4GB Memory Module for Apple iMac 27-inch (Late 2012) Core i5 Core i7 1600MHz DDR3 (PC3-12800) (PARTS-QUICK Brand) at Amazon.com
Upgrading RAM On The New 27-inch iMac Is Easy, Here's How | Cult of Mac
Install memory in an iMac - Apple Support
Memory Upgrades for iMac 27-Inch (2012 - Mid 2015)
Adamanta 16GB (2x8GB) Apple Memory Upgrade DDR3L 1600MHz SODIMM Compatible for iMac (Mid 2011, Late 2012, Early/Late 2013, Late 2014, Mid 2015), MacBook Pro (Early/Late 2011, Mid 2012), Mac Mini at Amazon.com