Dual Gpu in Mac Pro 5,1

[Dlprod3]

How hard can you run those till the bottom one throttles?

I'm about to do the same thing with two Vega 64s.

 

[Dlprod3]

Hi, I have a Mac Pro 5,1 with a AMD RX560 and now I am going to have another one from other computer, my question is if I can put them together inside and how do they work? I know SLI does not work on Mac but I don't know if there is something similar or the cards just work individual. Should I do it ? or it isn't worth it.

I'm running a Mac Pro 5,1 as well, with a Vega 64. Instead of buying another Vega, I'd rather add my RX580. Would this work as well? I mainly use the system for video editing.

 

[h9826790]

I'm running a Mac Pro 5,1 as well, with a Vega 64. Instead of buying another Vega, I'd rather add my RX580. Would this work as well? I mainly use the system for video editing.

The OS itself should be OK.

And if the software (e.g. FCP) can use multiple GPU, then it should give you ~50% improvement in rendering performance. But for HWAccel, only one media engine can do the job at a time. Therefore, the hardware encoding time won't be improved.

 

[Dlprod3]

The OS itself should be OK.

And if the software (e.g. FCP) can use multiple GPU, then it should give you ~50% improvement in rendering performance. But for HWAccel, only one media engine can do the job at a time. Therefore, the hardware encoding time won't be improved.

I'd be using it Davinci Resolve 18.5 Primarily. Not sure if it will help with lagging playback though.

 

[h9826790]

I'd be using it Davinci Resolve 18.5 Primarily. Not sure if it will help with lagging playback though.

AFAIK, the paid version of DV support multi GPU. However, if the issue is timeline lagging playback, then unless the root cause is not enough GPU power to real time render, otherwise, it won’t help.

 

[Dlprod3]

Since my last post I've had a bunch of alternate options thrown at me. I'm running a 2010 Mac Pro 5,1 12core with 96gb of ram, running Big Sur. Editing in Davinci Resolve 18.6 Studio.
I was planning on trying a dual GPU route for 4k video editing performance in playback and rendering but someone told me to just buy a Radeon VII 16gb GPU. What should I do? Will this GPU run in Big Sur?

 

[h9826790]

Since my last post I've had a bunch of alternate options thrown at me. I'm running a 2010 Mac Pro 5,1 12core with 96gb of ram, running Big Sur. Editing in Davinci Resolve 18.6 Studio.
I was planning on trying a dual GPU route for 4k video editing performance in playback and rendering but someone told me to just buy a Radeon VII 16gb GPU. What should I do? Will this GPU run in Big Sur?

Yes, Radeon VII works very well in Big Sur and Monterey.

But I am not sure how much it can do better than the Vega64 for your workflow. But that 16GB HBM2 should help.

Even you add another GPU, the VRAM won't quite add together. But for Radeon VII, you do have 16GB working VRAM.

 

[murf1972]

How to provide dual GPU on Mac Pro 5,1? Pixlas Mod alternative?

 

[MarkC426]

How to provide dual GPU on Mac Pro 5,1? Pixlas Mod alternative?

Depends on GPU...
There are many GPU's that can be installed with 1 6pin connector (or none).

GPU Compatibility List for cMP

Content: 1. Summary 2. Information on common GPUs that can be used in cMP 3. GPU power consumption 4. Color compatibility 5. Flashing nuances 6. What to choose? 7. Useful links. 1. Summary 1.1. There are 50+ GPU types that are compatible with cMP (classic MacPro = Mac Pro 1.1-5.1/...

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