How to Upgrade/Replace GPU Graphics Card on Mid-2011 21.5" iMac - YouTube
Apple iMac 21.5" 2010 ATI HD 4670 256MB GDDR3 GPU Screws Brackets & Airport Card | eBay
Nvidia Quadro K3100m 4gb Gddr5 Mxm3.0b Metal Gpu Video Card Flashed Vbios For Imac A1312 27-inch Mid 2010 / 2011 Upgrade - Laptop Repair Components - AliExpress
Apple iMac 21.5" A1311 2010 ATI Radeon HD 4670 256mb Video Card for sale online | eBay
nVIDIA Quadro K4000m 4GB Metal MXM Video Card for iMac 11,1 / 11,3 / 12,2 A1312 | eBay
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
Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
Nvidia Quadro K3100m 4gb Gddr5 Mxm3.0b Metal Gpu Video Card Flashed Vbios For Imac A1312 27-inch Mid 2010 / 2011 Upgrade - Laptop Repair Components - AliExpress
How I kept my iMac running for a decade | Cult of Mac
Amazon.com: Valley Of The Sun Genuine Graphics Video Card Replacement for Apple iMac Mid-2010 Core i5 A1312 27-Inch MC511LL/A MC511 Desktop PC, ATI Mobility Radeon HD 5750 GDDR5 1GB MXM VGA Board
I give you Big Sur running on a 2010 iMac, running as smooth as ever! This machine refuses to die! Thank you to everyone involved! : r/BigSurPatcher
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen
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
Install Mojave on Mac Pro 2010, 2012: Officially supported with new graphics card ⌚️ 🖥 📱 mac&egg
Upgrading the graphics in our 2011 iMac (first attempt) - YouTube