I currently have an ATI Radeon HD 2600 XT graphics card in it, but I am. Business of flashing generic cards with Apple compatible firmware. An instructional video on how to go about upgrading the graphic card for the Mac Pro 5,1 (Mid. This video is an outline on how to flash a Mac Pro 4,1 to a 5,1 which will allow you to upgrade the CPUs, Faster RAM and run MacOS High Sierra.
Welll.that depends on a few things, sir. Do you want a native Mac graphics card, or do you want one that has been flashed to work on a Mac? Do you have at least 10.8 or better? How much can you afford to spend? What graphics card do you have in there now?
Do not expect to be able to connect 2 cards together and use them in tandem (I think that's called CrossFire) Here are some choices: sapphiretech's Radeon 7950 with 3 Gigs of video ram, maybe the nVidia Quadro or evga GTX 680 (both of which have 2 gigs of video ram). I'd say check out AMD's firePro line, but they don't appear to support the Mac right out of the box. They may do so, but any support (or lack thereof) has been left to Apple. The newer D700 series found in the 2013 pro, which do work in tandem cannot be bought separately off the shelf. The equivalent would be the W9000.
The R9 series have been reported to work with mac. Space and time don't permit me to give you all of the information and benchmark results for any and all potentially compatible mac graphics cards.
You'll have to do that legwork and research on your own. Check out MacVidCards.com for help on flashing PC cards to work with Mac. I don't know anything else about 'em, don't work for 'em and can't give you a thumbs up or a thumbs down either way. I'm sure someone else will give you a better answer than I could right now JB. There are two brands of video card that work in the classic Mac Pro, the Nvidia range, and the AMD/ATI range. Of these the current 'best' models for a Mac are respectively the GTX 980, and the R9 280x. As standard if you buy a new one of either of these cards they will work in a classic Mac Pro but will not as standard show anything on screen until the Mac has finished booting, and will also not as standard give you the ability to do things like hold down the Option key on the Mac and see the boot-choice screen.
![How To Flash Graphics Card For Mac How To Flash Graphics Card For Mac](https://egpu.io/wp-content/uploads/2017/05/razer-core-ti82-unsupported-mac.png)
These functions require that the video card include Mac compatible EFI firmware. It is possible to get both of these cards 'flashed' i.e. Loaded with Mac compatible firmware. For the GTX 980 card currently the only way to get one of these cards 'flashed' is by either sending it to MacVidCards, or buying a pre-flashed one from them.
![How To Flash Graphics Card For Mac How To Flash Graphics Card For Mac](http://macsecurity.net/files/image/20170513/freshmac-privacy-cleaner.png)
See they are located in the USA and one can only order direct from them, so if your located outside the USA then the cost including duty/shipping/sales tax can become punitive. Note: The GTX 980 whether it is flashed or not will only work with Yosemite, it will not work with Mavericks or earlier. For the R9 280x it is possible to 'flash' the card yourself. This will require using Windows in BootCamp on your classic Mac Pro.
See for best results you need to be running at least OS X 10.9.2 with this card. If you are willing to accept an older and less powerful Nvidia card it is possible to 'flash' a GTX 680 ones self. The GTX 680 is still capable of supporting 4K monitors but not 5K. Apple Footer • This site contains user submitted content, comments and opinions and is for informational purposes only. Apple may provide or recommend responses as a possible solution based on the information provided; every potential issue may involve several factors not detailed in the conversations captured in an electronic forum and Apple can therefore provide no guarantee as to the efficacy of any proposed solutions on the community forums. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site.