Gtx 965m GPU in 2011 iMac 27 inch

[Mazz889]

Need to know if a GTX 965m GPU will work in my iMac 2011, will it work but just not have boot screen or brightness control?

 

[herrdude]

Have you seen this gem of a discussion: 280 pages of excitement on that very subject.

It is highly recommended to start on the first page where you can get started on your quest.

 

[Rendell001]

Pretty sure it won't work as I think the card is Maxwell based - 2011 iMacs require the earlier Kepler based cards to work.

I think the GTX 860 is about the latest in that line that is supported by our friends over at the GPU upgrade thread.

Once again, page 1 of that thread is where you will find all of the latest info from the team.