Some useful websites
An Appple page specifying a selection of suitable graphics cards.
Then there is this site on installing a new GPU - which I did not follow. I just installed the new card in the Mac Pro
I bought a refurbed Mac Pro from Create Pro nearly three years ago from
It had the latest Mac Pro main board so it had the latest PCIE slot combination so it could have a Metal supporting graphic card installed.
Create Pro list a collecton of suitable cards for Mojave
I contacted Create Pro in September/October regarding what cards to use to enable Mojave run on my Mac Prothey replied
From (MacRefresh Ltd)
Here is our list of the available Mojave compatible graphics card which you can upgrade to ranging from entry level to high end;
AMD RX560 4GB - £245
AMD RX570 4GB - £395
AMD RX580 8GB - £445
These specific third-party graphics cards are Metal-capable and compatible with macOS Mojave on Mac Pro (Mid 2010) and Mac Pro (Mid 2012):
Some other third-party graphics cards* based on the following AMD GPU families might also be compatible with macOS Mojave on Mac Pro (Mid 2010) and Mac Pro (Mid 2012):
I bought one of the AMD RX... cards cards, installed it into the Mac Pro and aftera few days of successful operation I then installed Mojave.
The typical Apple Logos do not appear during the boot up process, the first thing you see is the horizontal line that moves across the screen and shortly after that the system is working.
Any questions just ask