SOLVED: What GPU's are compatible with iMac 27" 2011? - iMac Intel 27" EMC 2429 - iFixit
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
Baking a video card on mid-2011 27-inch iMac - YouTube
How to Bake a Failing Graphics Processor to Possibly Live Another Day - DreamLight.com
How to Bake a Failing Graphics Processor to Possibly Live Another Day - DreamLight.com
How to Bake a Failing Graphics Processor to Possibly Live Another Day - DreamLight.com
$30 27" iMac - Baking a GPU Back to Life - YouTube
Reflow on HD6750M graphics card | MacRumors Forums