iMac Intel 27" EMC 2429 Radeon HD 6770M Graphics Card
2011 iMac 27″ K1100M Graphics Card Swap And Install Catalina
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nVidia Geforce GTX770M 3GB MXM Video Card For iMac 27-inch 2010 & 2011 – local338
imac - Graphics Card Failure - Ask Different
Cracking Open the 27" Apple iMac (2011) | TechRepublic
Apple iMac 27" A1312 2011 GPU Heatsink for Video Card Temp Sensor 730-0628-a for sale online | eBay