mid-2011 iMac 27 graphics issue: Mac Talk Forum: Digital Photography Review
Today picked up a $20 2011 iMac 27” with working gpu too! : r/mac
Amazon.com: Valley Of The Sun New 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement :
Graphics Card - iMac 27″ A1312 (Mid 2011)
iMac 27' Mid 2011 GPU Issue | MacRumors Forums
A1312 iMac GPU Replacement - YouTube
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
Amazon.com: Valley Of The Sun New 2GB Graphics Video Card Upgrade for Apple iMac Mid-2011 27 Inch Core i5 MC814LL/A MC814 A1312 Desktop All-in-One PC, AMD Mobility Radeon HD 6970M Replacement :
Apple opens graphics card replacement program for some mid-2011 iMacs - 9to5Mac
Imac 27 Inch 2009-2011 Graphics card replacement - YouTube