iMac | 3.3 GHz Intel i3 | 21.5 Inch | Early 2013 - Techable.com
Memory upgrade: Apple iMac 2012/2013/2014 (Howto)
A-Tech 16GB Kit (2x8GB) RAM for Apple MacBook Pro (Mid 2012), iMac (Late 2012, Early/Late 2013, Late 2014, Mid 2015), Mac Mini (Late 2012) | DDR3 1600MHz PC3-12800 SODIMM 204-Pin Memory Upgrade at Amazon.com