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macOS 10.15 Catalina on Unsupported Macs | Page 398 | MacRumors Forums
Apple Mac Pro AMD Radeon HD 2600 XT 512MB PCI-E Video Card HD2600XT OSX | eBay
Amazon.com: New HD 6970M 2GB Graphics Card Replacement for iMac Mid-2011 27" All-in-One Desktop PC Core i7 3.4 MD063LL/A MD063, AMD Radeon HD6970M HD6970 GPU Upgrade MXM Video Board Repair Parts :
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Update 2 on the 99p iMac! Baked the GPU And it's working!! : r/mac
Amazon.com: New HD 6970M 2GB Graphics Card Replacement for iMac Mid-2011 27" All-in-One Desktop PC Core i7 3.4 MD063LL/A MD063, AMD Radeon HD6970M HD6970 GPU Upgrade MXM Video Board Repair Parts :
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GPU swap? · Issue #102 · dosdude1/macos-catalina-patcher · GitHub
iMac 27' (mid 2011) fix for AMD Radeon HD 6970M no video problem - YouTube
2011 iMac Graphics Card Upgrade | Page 471 | MacRumors Forums
Apple Initiates Video Card Replacement Program for Radeon HD 6970M Equipped Mid-2011 27” iMacs
iMac Intel 27" EMC 2429 Radeon HD 6970M Graphics Card
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