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SOLVED: What GPU's are compatible with iMac 27" 2011? - iMac Intel 27" EMC 2429 - iFixit
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Upgrading the graphics in our 2011 iMac (first attempt) - YouTube
iMac (2019) RX 570 gpu replacement - Apple Community
Need to repair this iMac 27" 2011, Please any suggestions? GPU Temperature is not even 50 C : r/mac
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iMac Intel 27" EMC 2429 Radeon HD 6770M Graphics Card