Apple iMac A1311 21.5" AiO Computer i5-2400S (Mid-2011) -
iMac 27" 2.7GHz (Mid 2011) | mac of all trades
Apple iMac review (mid 2011) - The Verge
Apple iMac review (mid 2011) - The Verge
Cracking Open the 27" Apple iMac (2011) | TechRepublic
2 GB Graphics Video Card GPU Upgrade Replacement for Apple iMac Mid-2011 A1312 27 Inch Core i7 3.4 i5 3.1 Desktop Computer, New AMD Radeon HD 6970M HD6970M 2GB MXM Board Repair Parts
iMac 27" mid 2011 or newer iMac for Mojave | MacRumors Forums