macOS 10.14 Mojave and “cheese grater” Mac Pros

[Peter Duemmler]

Originally Posted by off the wall

I just put an Apple flashed AMD 7970 in my 2010 Mac Pro. System Information reports it as "Metal: Supported".

Hopefully it will support the next OS version. I'm quite happy with the performance of this machine is it's current configuration.

How do you power the 7970 in combination with the HDX card?

[musicman691]

Originally Posted by Peter Duemmler

How do you power the 7970 in combination with the HDX card?

Probably something like a Y splitter cable

[BScout]

For my system, I steal the power from the optical drive bay to go to the graphics card and my HDX cards come from the main (normal) supply.

Who uses the optical drives these days anyway

[off the wall]

Originally Posted by Peter Duemmler

How do you power the 7970 in combination with the HDX card?

I have the 7970 running off the two PCI Aux power ports and the HDX card getting it's power from the unused SATA port 4 via one of these:

[off the wall]

Originally Posted by BScout

For my system, I steal the power from the optical drive bay to go to the graphics card and my HDX cards come from the main (normal) supply.

Who uses the optical drives these days anyway

How did you route the power wires out of the optical bay? I was going to go that route for the HDX power but couldn't come up with a neat solution without drilling holes, etc.

[LukeHoward]

I'm running an RX480 on my cheese grater on Sierra, which is fine (no boot screen though as mentioned). The only issue is, last time I checked, the High Sierra upgrade needs an Apple-flashed GPU for the installer (you can remove it post-installation). So being lazy I'm staying on Sierra for now. No idea if it will be different for Mojave.

[jsbach]

Originally Posted by off the wall

I just put an Apple flashed AMD 7970 in my 2010 Mac Pro. System Information reports it as "Metal: Supported".

Hopefully it will support the next OS version. I'm quite happy with the performance of this machine is it's current configuration.

Just installed a flashed AMD Radeon HD 7970 3 GB in my 2010 Mac Pro. No issues. Running beautifully so far. System Report says "Metal: Supported"

Crossing my fingers that this means the cheese grater still has some life left in it.

[Mike Thornton]

We have an article on this very topic recommending a range of options depending on your budget... How Do You Find Mojave Compatible Graphics Cards For Cheese-grater Apple Mac Pro 5,1 Computers?

On the Boot screen issue, other things you won't get if you don't get a Mac flashed graphics card are screens like which drive would you like to boot off, which you get when you hold down Option when you boot.

Hope that helps...

Mike