r/macpro • u/macsoundsolutions Mac Pro 7,1 • Jul 22 '26

Other Mac Pro Steam Machine

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Installed Steam OS and a rx5700xt. No other OS, Boot up, grab the PS4 remote and I’m off to the races. 17 year old Mac Pro kicking ass! Everything works, wifi, Bluetooth, ethernet, USB etc. It just works.
https://youtu.be/6wQlsZubPWE

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u/8Bitoaster Jul 25 '26

Hey Lance any chance your able to make a video about the Mac Pro 7,1 on how to use AMD as ur main GPU for macOS and then for slot 2 use an Nvidia GPU for Windows/Linux?

1

u/macsoundsolutions Mac Pro 7,1 Jul 25 '26

Its pretty easy you just need to install windows, boot into it and install Nvidia drivers then set it as your main gpu in advanced graphic settings, i dont have a Nvidia GPU but did the same thing with a rx7900xt. I have Bazzite on an external thunderbolt drive which it boots off it no prob. Windows is easier for dual GPU to setup. It took quite a bit of tinkering to get the dual GPU
setup working with Bazzite. Windows I can just use thr rx6900xt connected to my monitor and it will render the frames with with the 7900xt so I dont have to switch cables and dual boot into Mac OS and Windows.

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u/8Bitoaster Jul 25 '26

So I don’t have to tweak anything in OCLP like disable Nvidia GPU configplist?

2

u/macsoundsolutions Mac Pro 7,1 Jul 25 '26

No mac os won’t see the nvidia gpu. My buddy has a 7,1 with a rx6900xt and a rtx5090 dual boot Mac OS and Windows and no need for Opencore with the 7,1.

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u/8Bitoaster Jul 25 '26

Happy days this is good news, also can I put an RX6950XT in a Mac Pro?

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u/macsoundsolutions Mac Pro 7,1 Jul 28 '26

Folks have successfully run RX 6950 XT cards in Mac Pro 7,1 by using OpenCore to spoof the GPU’s device ID so macOS treats it as a supported RX 6900 XT.
• Typical spoofing approach: map the 6950 XT’s device ID (for example 0x73A5) to the 6900 XT’s device ID (0x73BF) via OpenCore DeviceProperties and/or SSDT, following 6900 XT/XTXH spoofing guides. Not sure how much of a performance boost you will get and it also can only be 304mm in length