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Saved this from when I upgraded my graphics card so I could update to Mojave
Mojave will only install if you have upgraded your BootROM and your Mac Pro have a Metal capable GPU.
If you are trying to install Mojave on a Mac Pro 5,1 (2009 updated to 5,1 firmware, 2010 and 2012), you have first to upgrade your BootROM to version MP51.0089.B00 and to High Sierra 10.13.6, then you can install a Metal capable GPU and install Mojave.
Remember: Apple Mojave recommend RX-560/580 cards do not have Mac EFI, so you need to install your original EFI GPU to upgrade your BootROM to MP51.0089.B00 using the Mac App Store 10.13.6 full installer. After that, Mojave installer can upgrade your firmware without the need of a Mac EFI GPU and requires that you only have Metal supported cards installed in your Mac Pro.
The Apple third-party graphics cards list identifies specific cards that are compatible:
- MSI Gaming Radeon RX 560 128-bit 4GB GDDR5
- SAPPHIRE Radeon PULSE RX 580 8GB GDDR5
These three cards have Mac EFI.
- SAPPHIRE Radeon HD 7950 Mac Edition
- NVIDIA Quadro K5000 for Mac
- NVIDIA GeForce GTX 680 Mac Edition*
These ones might be compatible, none of which have Mac EFI:
- AMD Radeon RX 560
- AMD Radeon RX 570
- AMD Radeon RX 580
- AMD Radeon Pro WX 7100
- AMD Radeon RX Vega 56
- AMD Radeon RX Vega 64
- AMD Radeon Pro WX 9100
- AMD Radeon Frontier Edition
- MSI Gaming Radeon RX 560 128-bit 4GB GDDR5
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cornelius_blackfoot
AlexD
I've been using my free Mac Pro 5.1 for a bit now and it's been pretty good for my purposes. Could do with a little bit more grunt so I reckon I'll upgrade it a little.
An SSD to run OS and apps off, some RAM, USB 3 PCI card and a new graphics card will probably do the trick, but what graphics card please?
My budget for that would be around £150ish, so something like this?