APPLE iMac 27" A1312 109-C29657-10 HD 6970M 1GB GPU VIDEO CARD 2011 FOR REPAIR - Mo & Joe Electronics
iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium
Amazon.com: 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
Amazon.com: Original Graphics Video Card for Apple iMac 2011 Core i5 2.7 A1312 MC813LL/A MC813 27 Inch Desktop PC Computer AMD Radeon HD 6770M HD6770M GDDR5 512MB 109-C29557-00 Replacement Parts : Electronics
Cracking Open the 27" Apple iMac (2011) | TechRepublic
iMac Intel 27" EMC 2374, AMD Radeon HD 4850 Video Card Removal & Repair - iFixit Repair Guide
2011 iMac 27″ GPU failure Fix/Upgrade – JCYCLE
Need to repair this iMac 27" 2011, Please any suggestions? GPU Temperature is not even 50 C : r/mac