Graphics Card, Radeon HD - iMac 21.5″ A1311 (Mid 2010)
iMac Graphics Issue – Expert Mac Repair Lewisville
Amazon.com: Original Graphics Video Card Replacement for Apple iMac Core i3 3.2 Mid-2010 21.5 Inch Desktop Computer A1311 MC509LL/A MC509, AMD ATI Radeon HD 5670 GDDR3 512MB, GPU Board Repair Parts : Electronics
Nvidia K1100M upgrade on the Mid-2010 iMac 21.5' - YouTube
Amazon.com: Valley Of The Sun Graphics Video Card GPU Replacement for Apple iMac Mid-2010 A1311 Core i3 3.06 MC508LL/A MC508 21.5 Inch Desktop Computer, ATI Radeon HD 4670 GDDR3 256MB, MXM VGA
Nvidia K1100M upgrade on the Mid-2010 iMac 21.5' - YouTube
iMac 2010 GPU in 2011 | MacRumors Forums
Amazon.com: Valley Of The Sun Graphics Video Card GPU Replacement for Apple iMac Mid-2010 A1311 Core i3 3.06 MC508LL/A MC508 21.5 Inch Desktop Computer, ATI Radeon HD 4670 GDDR3 256MB, MXM VGA
For iMac 27" A1312 Mid 2009 2010 2011 upgrade NVIDIA K3100M 4GB GPU Video Card | eBay
Apple opens graphics card replacement program for some mid-2011 iMacs - 9to5Mac