Actualización para tarjeta GPU de vídeo para iMac, 27 pulgadas, A1312, Mid 2009, 2010, 2011, 4850, 6970m, 109 C29657 10, Nvidia GTX, 870M, 6GB, MXM, TYPE B|Marcos de ordenadores portátiles| - AliExpress
Amazon.com: Original Graphics Video Card for Apple iMac Core i7 2.8 27-Inch Late 2009 A1412 MC507LL/A MC507 Desktop Computer, AMD ATI Mobility Radeon HD 4850 GDDR3 512MB 109-B91157-00, GPU Upgrade Replacement : Electronics