AMD Radeon HD 6770M / Intel HD Graphics 3000 Archives - TEKDEP.com Parts Tools Gadgets Repair
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Intel iMac 21.5" ATI Radeon HD 6770M 512MB Video Card
AMD/ATI Radeon HD 6770M wont show bios in GPU-Z and wont be recognized in win 10 | TechPowerUp Forums
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AMD 216-0810001 GPU Video Card Chipset for iMac 27" 2011 HD 6770M 512MB
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Amazon.com: Valley Of The Sun Original Graphics Video Card GPU Replacement for Apple iMac A1311 Mid-2011 Core i5 2.7 MC812LL/A MC812 21.5 Inch Desktop Computer, AMD Radeon HD 6770M GDDR5 512MB Repair