SOLVED: AMD Radeon HD 6770M on iMac can be replaced by AMD radeon 6970 - iMac Intel 27" EMC 2429 - iFixit
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AMD Radeon HD 6770M 512MB | MXM グラフィックボード GDDR5 | Apple iMac 2011 A1311 A1312 | 109-C29557-00 216-0810005 GPU [XX#165]|PayPayフリマ
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Amazon.co.jp: Original Graphics Card GPU Replacement, for Apple iMac A1311 Mid-2011 Core i5 2.7 MC812LL/A MC812 21.5" Desktop Computer AMD Radeon HD 6770M GDDR5 512MB Repair Parts : Computers
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