![]() This is insanely expensive, and again, just putting defective parts into service. The final option is to replace the logic board. Replacing the GPU is very dangerous (brick warning), and you are just putting another defective unit on your board. You can extend its life for a few weeks with a reflow, or attempt to replace the GPU. ![]() You are not going to be able to fix the GPU. ![]() There is a widely known defect in the Radeon GPUs on these MacBook Pro models. This is normally lines on screen, stripes on screen, sometimes even black screen or blank screen. So you, like many others, have a 2011 MacBook Pro with video issues. To identify a graphics card part number, check the label on the back of the card. The NVIDIA GeForce 8800 GT card requires Mac OS X 10.5.2 or later with the Leopard Graphics Update 1.0 or the computer may not start up properly. New graphics cards for Mac Pro from Apple are not available. Question: Q: Upgrade graphic card or buy new iMac I have a mid-2011 iMac 27' and the graphics card has failed. For complete specs on a particular system, click on the name of the Mac (left column). There are no larger video cards, presently, used in iMacs.
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