Model A1419 / EMC 2806 & EMC 2834/ Late 2014 or Early 2015 or late 2015 / 3.3 or 3.5 GHz Core i5 or 4.0 GHz Core i7 Processor / Retina 5K display

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AMD Radeon R9 M290X graphics card on iMac retina 5 Switchable?

Can i change out the AMD Radeon R9 M290X graphics card on my iMac 27" retina 5k with an AMD Radeon R9 M295X?

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First the R9 M290X is a GPU chip not a card (PCI).

Sorry, its soldered to the logic board and not replaceable. Here's a good image of the chip (marked in Red): Main logic bd iMac 27" Retina 5K

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