Amazon.com: Original Graphics Video Card GPU Replacement for Apple iMac A1311 Mid-2011 Core i5 2.7 MC812LL/A MC812 21.5 Inch Desktop Computer, AMD Radeon HD 6770M GDDR5 512MB Repair Parts : Electronics
2GB Graphics Video Card Improve for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Alternative Restore Elements - Top Motherboards
For Imac 27" A1312 Hd6970 Hd6970m 1g 1gb Video Card 2011 109-c29657-10 216-0811000 Hd 6970 Graphic Card Replacement - Buy A1312 Hd6970 1gb Product on Alibaba.com
Would this be a bad GPU? iMac mid 2010 21.5” : r/mac
iMac 2011 GPU Upgrade
2011 iMac 27″ GPU failure Fix/Upgrade – JCYCLE
iMac Repair & Upgrade, Same Day Services
2011 iMac 27″ GPU failure Fix/Upgrade – JCYCLE
Apple Initiates Video Card Replacement Program for Radeon HD 6970M Equipped Mid-2011 27” iMacs
2GB Graphics Video Card Improve for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Alternative Restore Elements - Top Motherboards
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen
Apple opens graphics card replacement program for some mid-2011 iMacs - 9to5Mac
Apple Opens Replacement Program For Mid-2011 27-inch iMac Graphics Cards | Redmond Pie
upgrade - Ordering a 21.5" iMac with a different graphics card - Ask Different
Buy 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
nVIDIA GeForce GTX 780m GTX780M 4GB GDDR5 MXM Video Card Flashed VBIOS for iMac 27 inch Mid 2011 Graphics Upgrade|Laptop Repair Components| - AliExpress
Apple iMac 27" A1312 2011 4GB Graphics Card- Replacement for AMD Radeon HD 6770M | eBay