Amazon.com: Graphics Video Card GPU Replacement for Apple iMac Mid-2010 A1312 Core i5 3.6 MC510LL/A MC511LL/A 27 Inch 27" Desktop PC Computer, ATI Mobility Radeon HD 5670 GDDR3 512MB Genuine Parts :
iMac mid 2010 graphics issues after insta… - Apple Community
Would this be a bad GPU? iMac mid 2010 21.5” : r/mac
Amazon.com: 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 Repair Parts : Electronics
Nvidia Quadro K2100m N15p-q3 2gb Mxm Video Card Prelashed Vbios For Imac 21.5" / 27" Late 2009 To Mid 2011 Upgrade - Laptop Repair Components - AliExpress
2011 iMac Graphics Card Upgrade | How to • Mac Expert Guide
iMac 2010 GPU Upgrade
iMac Intel 27" EMC 2390 Radeon HD 5750 Graphics Card - iFixit Store
For iMac 27" A1312 Mid 2009 2010 2011 upgrade NVIDIA GTX 880M 8GB Video Card | eBay
Amazon.com: Original Graphics Video Card GPU Upgrade Replacement for Apple iMac 21.5 Inch Late 2011 Core i3 3.1 All-in-One Desktop PC MC978LL/A, AMD ATI Mobility Radeon HD 6750M, MXM VGA Board Repair
iMac Intel 27" EMC 2374, AMD Radeon HD 4850 Video Card Removal & Repair - iFixit Repair Guide