Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
Shop Imac Video Card Replacement | UP TO 60% OFF
Amazon.com: Original Graphics Video Card GPU Upgrade Replacement for Apple iMac 21.5 Inch Late 2011 Core i3 3.1 All-in-One Desktop PC MC978LL/A, AMD ATI Mobility Radeon HD 6750M, MXM VGA Board Repair
Need to repair this iMac 27" 2011, Please any suggestions? GPU Temperature is not even 50 C : r/mac