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rm5

macrumors 68020
Original poster
Mar 4, 2022
2,414
2,758
United States
I have a spare Dell OEM Radeon R7 250 GPU (2 GB version) that I bought from a local shop a couple of years ago, and just realized I still have it.

I have a 5,1 Mac Pro running Monterey through OpenCore. Currently, it has the stock 5770 video card, and I attempted to put in the R7 250. The machine booted up fine, but when it got to the login window, I noticed there was no GPU acceleration. In "About This Mac" it does not detect the card, and instead says "Display 6 MB."

I also noticed it did not show the "original" gray screen before booting into OpenCore, so I think that means that the only reason this card even displays video on this Mac Pro is because it's running OpenCore, but I could be wrong.

My question is: Is there a way to make this GPU work in this cMP and also achieve full GPU acceleration? On the Definitive Mac Pro Upgrade Guide, it lists the card as being Metal-supported. It also says that it "requires a hack" to get it to work, but I already have OpenCore. It would be great to use so that I don't have to go out and get another Metal-supported video card.

Any thoughts?
 
Last edited:

Borowski

macrumors regular
Oct 22, 2018
221
52
This is typical behaviour when no matching driver is present in OSX.
If possible, you can attach the bios of this card. Perhaps it has no GOP-support, which is necessary for startup-screen with OC.
To my knowledge, this is a very special card, only available from OEMs and has the "Oland"-gpu, which is a late branch of AMDs GCN1.0-architecture.
I guess you can't fix the problem completely, possibly some hackintosh-guys could mod something (this is the needed hack), but better look for a better matching card.
 

rm5

macrumors 68020
Original poster
Mar 4, 2022
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2,758
United States
Thanks so much for the information! I think I'm better off, like you said, buying a fully supported Metal GPU.
 

rm5

macrumors 68020
Original poster
Mar 4, 2022
2,414
2,758
United States
Monterey has already support the new AMD RX 6600XT, hasn't it?
Otherwise, a cheap RX560 works, too.
I was looking at the WX3100, but it looks like the RX560 is roughly the same price ($150). And yes, you're right, Monterey does support the RX 6600 XT.
 
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