mryingster
macrumors 6502
Yeah, it's your GPU that's the issue. The AMD drivers for newer cards in High Sierra (and Mojave) require the SSE4.2 instruction set, which the CPUs in the Mac Pro 3,1 do not support. Unfortunately, the only solution is to replace the card with an nVidia one.
Figures... I have an AMD HD 6870 that used to be in this computer. Will that work, or have the same issue?
Thanks for the help!
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Sorry. I’m an idiot. I need nVidia. You clearly said that. Now, nVidia cards won’t have a boot screen will they?Figures... I have an AMD HD 6870 that used to be in this computer. Will that work, or have the same issue?
Thanks for the help!
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