Apple iMac 5K Retina 27" Desktop - 3.2GHz Quad-Core i5 - 8GB RAM - 1TB – The Refurbished Apple Store
How to Upgrade/Install Memory in a 21.5-inch iMac (Late 2012– Mid 2014) iMac14,1 iMac14,3 - YouTube
Apple iMac Upgrades | SimplyFixIt
Install memory in an iMac - Apple Support
iMac with Retina 5K Display 2014/2015 Memory Upgrades
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
iMac with Retina 5K Display 2014/2015 Memory Upgrades
Install memory in an iMac - Apple Support
OWC Announces Memory Upgrades Up to 32GB for New Apple 2014 iMac 27” with Retina 5K display
Timetec 32GB KIT(4x8GB) Compatible for Apple DDR3L 1600MHz PC3L-12800 CL11 for iMac (Mid 2011, Late 2012, Late 2013, Late 2014 Retina 5K, Mid 2015 Retina 5K) SODIMM Memory Module MAC RAM Upgrade at Amazon.com
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
Install memory in an iMac - Apple Support
32GB Kit (4 x 8GB) PC3-12800 RAM for Apple iMac Late 2014 - 27 Inch Retina