Apple iMac (A1312) 27 Inch High Sierra Intel 2.7Ghz i5 1TB HDD 16GB RAM Mid 2011 | eBay
Amazon.com: 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade Repair
Apple iMac review (mid 2011) - The Verge
Apple Thunderbolt Display 27-inch (Mid 2011)
Apple iMac review (mid 2011) - The Verge
A-Tech 32GB (4x8GB) RAM for Apple iMac (Mid 2010 27 inch 4-Core, Mid 2011 21.5/27 inch) | DDR3 1333MHz PC3-10600 204-Pin SODIMM Memory Upgrade Kit at Amazon.com
21.5- and 27-inch iMacs (Mid 2011) | Macworld
Apple iMac Core i5 8GB Computers | MC813LL/A | Discount-Computer.com