Highest Possible Graphics Card For Early 2009 Mac Pro

the 2009 mac pro 4,1 can be upgraded to a number of current aftermarket cards from Nvidia and AMD but in many cases the cards require custom flashing from the distributor and custom drivers. You need to purchase a card from a mac distributor because the "Windows" versions of these cards will not work out of the box and OS X will not support it without the 3rd party drivers. This procedure is not recommend by apple who would rather you buy a new mac pro and by new I mean something for $5K who most recent GPU offering is already 3 years old.

web search "Mac Pro 4,1 GPU" for further details.

Best ($1100):

http://www.macvidcards.com/store/p44/Nvidia_GTX_Titan_X_12_GB_%282014%29.html

next ($600)

http://www.macvidcards.com/store/p49/Nvidia_GTX_980_Ti_6_GB.html

You can get PC cards less expensive but you will not get a boot screen

you can put a 1080 in those rigs, but it will only work in native boot to Windows at the moment.

🙂