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
iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Install memory in an iMac - Apple Support
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 - Walmart.com
Apple's 2012 iMac: Ready for its close-up (pictures) - CNET
What Does It Take To Upgrade a 2012 iMac 21.5"?
4GB PC3-12800 RAM for Apple iMac Late 2012 - 27 Inch MD095LL/A Memory Upgrade Module
Apple iMac (Late 2012) review (21.5- and 27-inch) | Macworld
Apple's 27" iMac Late 2012 model. How to upgrade the ram to 16GB - YouTube
Timetec 16GB KIT(2x8GB) Compatible for Apple DDR3L 1600MHz for Mac Book Pro(Early/Late 2011,Mid 2012), iMac(Mid 2011,Late 2012,Early/Late 2013,Late 2014,Mid 2015), Mac Mini(Mid 2011,Late 2012) MAC RAM at Amazon.com