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
2011 iMac 27″ GPU failure Fix/Upgrade – JCYCLE
Amazon.com: 2GB Graphics Card GPU Upgrade Replacement for iMac 27 Inch Mid- 2011 A1312 Desktop Computer Core i5 3.1 MC814LL/A MC814, AMD Radeon HD 6970M GDDR5 2 GB MXM Video Board Repair Parts :
SOLVED: What GPU's are compatible with iMac 27" 2011? - iMac Intel 27" EMC 2429 - iFixit
iMac 27" mid-2011 GPU upgrade
For iMac 27" A1312 Mid 2009 2010 2011 upgrade NVIDIA K4100M 4GB GPU Video Card | eBay
Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
iMac 27" mid-2011 GPU upgrade
Apple iMac 27" with a failed Graphics card is getting surgery today... - Jappel Tech - Home Theater, Savant, URC, Lutron Shades, Audio Video, Tech Support, Managed Services
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen