For iMac 27" A1312 Mid 2009 2010 2011 upgrade NVIDIA K4100M 4GB GPU Video Card | eBay
Today picked up a $20 2011 iMac 27” with working gpu too! : r/mac
2011 iMac 27″ K1100M Graphics Card Swap And Install Catalina – TuXxX Blog
For iMac 21.5" A1311 Mid/Late 2011 6770 AMD upgrade Nvidia K610m 1GB Video Card | eBay
How to Upgrade/Replace GPU Graphics Card on Mid-2011 21.5" iMac - YouTube
Upgrading GPU Graphics Card on iMac 2011 - YouTube
For Imac 27" A1312 Mid 2009 2010 2011 4850 6970m 109-c29657-10 Upgrade For Nvidia Gtx 870m 6gb Mxm Type-b Video Gpu Card - Laptop Frames - AliExpress
iMac Intel 21.5" EMC 2428 GPU Card Replacement - iFixit Repair Guide
iMac Intel 27" EMC 2374, AMD Radeon HD 4850 Video Card Removal & Repair - iFixit Repair Guide
iMac 2011 GPU Upgrade
2011 iMac Graphics Card Upgrade | Page 3 | MacRumors Forums
iMac mid 2011 GPU upgrade | MacRumors Forums
2011 iMac Graphics Card Upgrade | MacRumors Forums
2011 iMac Graphics Card Upgrade | How to | Mac Expert Guide
Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
