iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
Refurbished Apple iMac 13,2/i5-3470/8GB RAM/1TB HDD/GTX 675MX/27-inch/A ( Late - 2012) | Mac4sale
NEMIX RAM 16GB Kit (2x8GB Upgrade) DDR3-1600 SODIMM PC3-12800 for Apple MacBook Pro Mid 2012 / iMac Late 2012 / iMac 2013, Late 2014, Mid 2015, Mac Mini Late 2012 at Amazon.com
Teardown of New 21.5-inch iMac Reveals Glued Down LCD and Dual Microphones - MacRumors
Apple iMAC Core i5 3rd Gen 8GB Ram 1TB SSD Price in Pakistan
iMac (27-inch, Late 2012) - Technical Specifications
Apple iMac 27" - Late 2012 Reviews, Pros and Cons | TechSpot
Apple iMac (Late 2012) review (21.5- and 27-inch) | Macworld