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chfilm

macrumors 68040
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Nov 15, 2012
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Berlin
Hi,

I was wondering, owning a Vega II, does anybody run it alongside a W5700 from apple in davinci resolve and can report how it affects the noise reduction on 4K Prores footage? Does it play back at 25fps?

i saw on bare feats that a bare 5700XT for 400$ beats the Apple Card in resolve on its own... but here the question would be if that card also spins up in sleep mode.
 

awkward_eagle

macrumors member
Feb 5, 2020
84
36
Mixing and matching GPUs for compute in Resolve can cause slowdown and instability depending on what you're doing. It might work, but don't be surprised if you run into problems since Resolve prefers identical cards for compute. If you have two different cards it's better to use one for UI and the other for compute, which can be done by plugging the monitor into the UI card and manually setting the compute card in the Resolve preferences. Using a slower card for UI and two faster cards for compute is a popular combo for Resolve.
 
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chfilm

macrumors 68040
Original poster
Nov 15, 2012
3,428
2,113
Berlin
Mixing and matching GPUs for compute in Resolve can cause slowdown and instability depending on what you're doing. It might work, but don't be surprised if you run into problems since Resolve prefers identical cards for compute. If you have two different cards it's better to use one for UI and the other for compute, which can be done by plugging the monitor into the UI card and manually setting the compute card in the Resolve preferences. Using a slower card for UI and two faster cards for compute is a popular combo for Resolve.
Good to know... so eventually a second VEGA II is in order. Sigh...
 
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chfilm

macrumors 68040
Original poster
Nov 15, 2012
3,428
2,113
Berlin
Just think about the extra Tb3 ports you'll be getting ;)
But I’d also get those from a w5700... would be interesting in how far this combo is really slower or faster, and what advantages it would bring to hook up let’s say two XDR displays to the W5700 and leave the Vega entirely for compute.
 

awkward_eagle

macrumors member
Feb 5, 2020
84
36
Using the UI card for compute isn't a bad thing, it's just a good direction to go if your cards are mismatched. Resolve sort of caps the performance of every card in the compute pool based on the clock speed/vram of the slowest card. 2x 5700s or 2x Vega II cards would work fine if they were the only two cards and both were being used for compute and one for UI as they're both fast enough for general Resolve functionality. At least that's been the case with my 2x Vega II MPX + XDR. The MPX versions are the most ideal on account of the additional vram compared to their PC counterparts. Resolve loves vram. So does FCP if you ever do roundtrips between the two.
 
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