How to Upgrade/Replace GPU Graphics Card on Mid-2011 21.5" iMac - YouTube
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
21.5 iMac LATE 2009 A1311 Logic Board - DEDICATED GFX CARD -CPU/GPU NO - Part Haven
Baking a Graphics Card | macman860
5 Things to Know Before Upgrading Your 2009 or Later iMac
How to upgrade a Mac: Swap in new RAM, graphics card, hard drive and more | Macworld
21.5" Late 2012 iMac | Display or GPU issue - Ask Different
Where is the GPU located and what gpu is it? (Late 2009 21.5” ) : r/mac
Nvidia Quadro K1100m Gddr5 2gb Mxm Video Card Flashed Vbios For Imac 21.5" / 27" Late 2009 To Mid 2011 Upgrade - Laptop Repair Components - AliExpress
Late 2009 iMac 27" Video Card Repair — 4850 — 2nd Bake - YouTube
For iMac 21.5" A1311 Mid/Late 2009 2010 2011 NVIDIA K1100M 2GB Video Card | eBay
iMac 21.5" Late 2009 (10,1) - CPU Upgrade E8600 | MacRumors Forums
2010 iMac GPU Upgrade to NVIDIA GTX 765M - YouTube
Apple iMac 21.5in (Late 2009) Review: Apple beefs up its consumer desktop PC with a faster CPU and an energy-efficient display - Back to School - Desktop PCs - PC World Australia
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 Replacement Repair Parts : Electronics
Review: Apple's 27" big screen iMac (late 2009) | AppleInsider
Amazon.com: 2GB Graphics Card GPU Upgrade Replacement for iMac 27 Inch Mid-2011 A1312 Desktop Computer Core i5 3.1 MC814LL/A MC814, AMD Radeon HD 6970M GDDR5 2 GB MXM Video Board Repair Parts :
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