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Amazon.com: 2 GB Graphics Video Card GPU Upgrade Replacement for Apple iMac Mid-2011 A1312 27 Inch Core i7 3.4 i5 3.1 Desktop Computer, New AMD Radeon HD 6970M HD6970M 2GB MXM Board
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Original For Apple Imac 27" A1312 Vga Card Gpu 216-0732019 Video Card Graphic Card 109-b90957-00 Hd4850 512mb Full Tested - Pc Hardware Cables & Adapters - AliExpress
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