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i’m triying to figure out if is possible to upgrade my current graphic card (AMD HD Radeon 6770M, 512 MB) replacing it by a better one. My iMac dates from mid 2011 with 27 inches screen. If is posible what card could be a good replacement? Thanks in advance
Try a search for this part: 27" iMac (Mid 2011) AMD Radeon HD 6970M 2GB Video Card Item #: 661-5969 1009267 Replacement, 27" iMac (Mid 2011) AMD Radeon HD 6970M 2GB Video Card http://www.welovemacs.com/6615969.html See @danj answer here: How to replace the video card?
Sorry, your system does not have a replaceable graphics card.
Somebody has done it: https://forums.macrumors.com/threads/201…
would an external gpu work? There is nothing wrong with mine, other than I cannot play Blizzard games now :/ thanks to them upgrading their coding to Metal 2
The 27-inch (Mid-2011) does not have a soldered GPU board. It’s attached to the logic board but on the back side. To remove, you loosen the logic board, detach the GPU cooling heatsink from the bracket and remove two screws holding the GPU to the logic board bracket. It slides right out of the board socket. I figured all that out and tried to replace my shaky board with what should be a working HD6770M and all I get is a black screen. Ugh. Old shaky board goes back in and I’m back where I started - pixelated primary and secondary screens. One of the heatsink screws was flopping around in there right up against the GPU terminals so maybe I just got a bad replacement board.
