MP 1,1-5,1 Second GPU with Mac Pro 4.1 / 5.1 (RTX 3070)

[Aryan-x86]

Hi there,

I have a Mac Pro 4.1, flashed to a 5.1, running Windows 10 only through Bootcamp.

I am currently using a MVC Flashed MSI GTX 970, with boot screen and I upgraded my other PC's GPU today, and I have a leftover RTX 3070 that I plan on using for a new build later this year.

Now I'm wondering if it's possible to use the RTX 3070 alongside the GTX 970 temporarily and keep my Boot screen? I believe I am powering the GTX 970 with some kind of adapter? Not with the Pixla Mod thing.

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Can/Should I power the RTX 3070 with an external PSU?

Will Windows 10 work?

Will MacOS (on another SSD) work?

Will I keep the boot screen?

Is it better to use the RTX 3070 only, if I'm only gonna use Windows, thus getting rid of the boot screen?

 

[tsialex]

MacPro firmware does not have UEFI HII support, NVIDIA cards since the RTX 2xxx require HII and won't complete POST with a MacPro5,1.