Late 2009 iMac 27" Video Card Repair [4850 Bake] - YouTube
Amazon.com: Original Graphics Card GPU Replacement, for Apple iMac Late 2009 A1312 MC507LL/A 27-Inch Core i7 2.8 27-Inch Computer, AMD Radeon HD4850 HD 4850 GDDR3 512MB, MXM GPU Video Board Repair Parts :
Amazon.com: Original Graphics Video Card for Apple iMac Core i7 2.8 27-Inch Late 2009 A1412 MC507LL/A MC507 Desktop Computer, AMD ATI Mobility Radeon HD 4850 GDDR3 512MB 109-B91157-00, GPU Upgrade Replacement : Electronics
Where is the GPU located and what gpu is it? (Late 2009 21.5” ) : r/mac
Late 2009 iMac 27" Video Card Repair — 4850 — 2nd Bake - YouTube
Apple iMac A1311 A1312 2009 2010 2011 NVIDIA K1100M K2100M 2GB Video Card GPU | eBay
iMac Graphics Card GPU Overheating and Failure
Original Ati HD 6970M 5750m 4850 4670 Graphics Card Video Card 1GB 2GB 109-C29657-10 For Apple iMac 27" A1312 GPU 2009 2010 2011 - AliExpress
Original Ati HD 6970M 5750m 4850 4670 Graphics Card Video Card 1GB 2GB 109-C29657-10 For Apple iMac 27" A1312 GPU 2009 2010 2011 - AliExpress
Amazon.com: Original Graphics Card GPU Replacement for Apple iMac 2009 Core 2 Duo 3.06 A1312 MB952LL/A 27 Inch Desktop PC Computer, ATI Mobility HD 4670 GDDR3 256MB 109-B80357-00, MXM Video Board Repair Parts : Electronics
Amazon.com: Genuine Graphics Video Card GPU Replacement for Apple iMac Late 2009 27 Inch Core i5 2.66 MB953LL/A A1312 All-in-One Desktop PC, AMD ATI Mobility Radeon HD 4850 GDDR3 512MB, MXM VGA
Amazon.com: 2GB Graphics Video Card Replacement for Apple iMac Mid-2011 27 Inch A1312 Core i7 3.4 MD063LL/A MD063 Desktop PC Computer, ATI Radeon HD 6970 GDDR5 2 GB, New GPU Upgrade Repair