Cracking Open the 27" Apple iMac (2011) | TechRepublic
SOLVED: What GPU's are compatible with iMac 27" 2011? - iMac Intel 27" EMC 2429 - iFixit
A1312 iMac GPU Replacement - YouTube
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Amazon.com: Valley Of The Sun New 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 :
Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
2011 iMac 27″ GPU failure Fix/Upgrade – JCYCLE
For iMac 27" A1312 Mid 2009 2011 HD6970M upgrade NVIDIA GTX 765M 2GB Video Card | eBay
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