Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
memory - What can be replaced/upgraded in a late-2009 iMac to make it run like a 2014-2016 iMac? - Ask Different
For Apple iMac 21.5" A1311 Mid/Late 2009 2010 2011 NVIDIA K2100M 2GB Video Card | eBay
iMac | 3.33 GHz Core 2 Duo | 21.5 Inch | Late 2009 - Techable.com
iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium
iMac Repair & Upgrade, Same Day Services
iMac 2009 to 2011 (A1311/A1312) Upgrade Guide – MacintoshMen
SOLVED: Can I upgrade the graphics card on my iMac? - iMac Intel 21.5" EMC 2308 - iFixit
Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
iMac | 2.66 GHz Intel i5 | 27 Inch | Late 2009 - Techable.com
Upgrading an iMac GPU for METAL Support! Late 2009 – Mid 2011 Models - YouTube
Someone gave me this unwanted Mac, anyone know if you can upgrade the graphics cards on these ? Keep seeing conflicting information it's a 24" early 2009 imac : r/mac
Review: 21.5-inch 2012 iMac takes two steps forward, one step back | Ars Technica
21.5 iMac LATE 2009 A1311 Logic Board - DEDICATED GFX CARD -CPU/GPU NO - Part Haven
Amazon.com: Genuine Graphics Video Card for Apple iMac Late 2009 A1311 Core 2 Duo 3.06 21.5 Inch Desktop PC MB950LL/A MB950, AMD ATI Radeon HD 4670 GDDR3 256MB, MXM VGA Board GPU