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iMac 27' Mid 2011 GPU Issue | MacRumors Forums
iMac 2009 / 2010 / 2011 GPU upgrade — Fixing LED/LCD PWM brightness with an ESP32 | by Fixing Things | Medium
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Need to repair this iMac 27" 2011, Please any suggestions? GPU Temperature is not even 50 C : r/mac
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2011 iMac GPU Upgrade was a total disaster (GTX 870M/i7 2600) - YouTube
How to Upgrade/Replace GPU Graphics Card on Mid-2011 21.5" iMac - YouTube
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Upgrading the graphics in our 2011 iMac (first attempt) - YouTube