MP 7,1 Need your input! What benchmarks and tests would you like to see on Mac Pro with 6900XT?

[diamond.g]

https://www.kitguru.net/wp-content/uploads/2020/12/sottr1.png

The 6900xt should be almost twice as fast at 4K than the 5700(assume the W is the XT variant). The Vega II appears to be about as fast as the 5700.
YMMV with respect to Metal performance versus DX12.

 

[rondocap]

Can you benchmark a game like "Shadow of the Tomb Raider" to test the 3d rendering performance?

I make 3d applications so I'd be interested to know the difference between the W5700, 6900XT and the Vega II for that use cases - and games are pretty close equivalent.

Sure, tested the w5700x, got 47 FPS on 4K and high.
Vega ii got 52 FPS, and I’m putting the 6900xt in tomorrow and will let you know that too

 

[innerproduct]

You have some answers here as you probably know: https://barefeats.com/rx-6900-xt-vs-other-gpus-in-imac-pro.html

 

[diamond.g]

In the barefeats tests I wonder why the 6900xt isn’t twice as fast as the 5700xt in every test.

You have some answers here as you probably know: https://barefeats.com/rx-6900-xt-vs-other-gpus-in-imac-pro.html

 

[rondocap]

Can you benchmark a game like "Shadow of the Tomb Raider" to test the 3d rendering performance?

I make 3d applications so I'd be interested to know the difference between the W5700, 6900XT and the Vega II for that use cases - and games are pretty close equivalent.

On 4K, set to high with the benchmark:

w5700x 47 FPS
Vega ii 52 FPS
6900 XT 85 FPS
RTX 3090 (PC) 101 FPS

 

[thexash]

On 4K, set to high with the benchmark:

w5700x 47 FPS
Vega ii 52 FPS
6900 XT 85 FPS
RTX 3090 (PC) 101 FPS

Thanks for that. So the Vega2 & W5700X are about on par, the 6900 XT is a quite significant improvement.

Barefeats shows something similar - although they have a lower number for whatever reason.

 

[rondocap]

Thanks for that. So the Vega2 & W5700X are about on par, the 6900 XT is a quite significant improvement.

Barefeats shows something similar - although they have a lower number for whatever reason.

I think that they had it connected via eGPU to an imac pro for some of the tests, too. This is also on a 28 core CPU as well.

Yeah, from my tests so far, the 6900xt is faster in every single case more or less, even Octane X for rendering. In FCPX and Resolve, it is also typically the fastest especially with two of them.

There are a few cases where the Vega ii, or two of them, still are relevant, maybe because of their higher VRAM for possible higher resolution video, but for the most part the 6900xt is a significant difference.

 

[rondocap]

Thanks for that. So the Vega2 & W5700X are about on par, the 6900 XT is a quite significant improvement.

Barefeats shows something similar - although they have a lower number for whatever reason.

If there is anything else you want me to test I can do that too

 

[rondocap]

In the barefeats tests I wonder why the 6900xt isn’t twice as fast as the 5700xt in every test.

I’m thinking of getting a 2nd Vega ii , but I can also get a duo and return my first Vega ii- what do you think, it’s for video 6k/8k. Theoretically the duo has less picie bandwith, but it does leave more room in the Mac Pro

 

[diamond.g]

I’m thinking of getting a 2nd Vega ii , but I can also get a duo and return my first Vega ii- what do you think, it’s for video 6k/8k. Theoretically the duo has less picie bandwith, but it does leave more room in the Mac Pro

That is probably a prudent route (getting the duo).

 

[rondocap]

That is probably a prudent route (getting the duo).

Only thing that made me think of possibly two separate ones, is that even in the Apple white paper for the Mac Pro they mention you get more PCIE bandwith with two separate GPUs. That’s more important for stuff that’s more real time like color grading, or 8k, and wouldn’t matter in 3-D rendering, where the duo may work better

 

[skippermonkey]

Safari snappiness quotient?

 

[jerrygladh]

1 vs 2 6900xt metal in resolve?

 

[rondocap]

1 vs 2 6900xt metal in resolve?

Here are some numbers, 1 6900 xt exported in 12 min 51 sec, two did it in 6 min 15 sec. Red 6k to 422 HQ

 

[motion777]

Can you please test if possible with these combinations:
1x 6900 xt
1x Vega II MPX
1x W5700X
2x W5700X
I'll be happy learn what is the difference in performance between the cards in Adobe after affects and Apple motion. Thanks!

 

[rondocap]

1 vs 2 6900xt metal in resolve?

Can you please test if possible with these combinations:
1x 6900 xt
1x Vega II MPX
1x W5700X
2x W5700X
I'll be happy learn what is the difference in performance in Adobe after affects and Apple motion. Thanks!

I don’t have after effects, but I can test in motion- what type of file or benchmark test? I’m not too familiar with it but if you can guide me with what sort of test I can figure it out

I work with mostly FCPX and Davinci resolve

 

[motion777]

Testing motion will be great, thanks. I can prepare a test file with the idea to compare Apple Motion's Ram preview performance and hopefully I can attach it here. I will do that tomorrow.
Other than that, as Apple motion uses Metal, Geek benching the cards Metal performance in the combination I mentioned will be really helpful.

 

[rondocap]

Testing motion will be great, thanks. I can prepare a test file with the idea to compare Apple Motion's Ram preview performance and hopefully I can attach it here. I will do that tomorrow.
Other than that, as Apple motion uses Metal, Geek benching the cards Metal performance in the combination I mentioned will be really helpful.

Here are some metal geekbench 5 numbers that I ran:

 

[flowrider]

^^^^Just to add on my RX6800 on a 7,1 Mac Pro I get:



With my W580X MPX I get:



Lou

 

[OkiRun]

See setup in signature.

 

[OkiRun]

View attachment 1796467

Here are some metal geekbench 5 numbers that I ran:

If possible, please add geekbench 5 breakdown for task types and this makes easier to compare the vega duo to other gpu in different demand. Thanks for consideration.

 

[rondocap]

See setup in signature.



View attachment 1796629

View attachment 1796628

How do you like the Vega ii duo? I may be able to return my single Vega ii and get a duo - I was considering doing two solo Vega ii, since I've read you get more pcie bandwidth with two separate cards, which can be useful for 8k and video editing - not so much for 3d or other rendering.

 

[OkiRun]

Yes ^ The other video production office I know well have two vega ii and not the duo. It gives extra ports than one vega ii duo. They do report good use of multiple 6 and 8k pro res open clips but have the afterburner card too. Its insane number of 6k clips they have simultaneous open in FCPX same time. Not possible with the PC and be smooth. To remember, I have mpx slot now open for something :good: in the future..? If coming.

 

[rondocap]

Yes ^ The other video production office I know well have two vega ii and not the duo. It gives extra ports than one vega ii duo. They do report good use of multiple 6 and 8k pro res open clips but have the afterburner card too. Its insane number of 6k clips they have simultaneous open in FCPX same time. Not possible with the PC and be smooth. To remember, I have mpx slot now open for something :good: in the future..? If coming.

I have the afterburner too, it gives a nice speed boost for prores for sure. Have you played back 8k raw on the duo? I’m really not sure which to go for, I know the 2 solo Vega ii likely are slightly better, but the duo is a more special gpu hardware wise with the design, tough choice!

 

[OkiRun]

Asked editor to put 4 red raw helium 8k clips up in a fcpx timeline and looking now has no skips or stutters. Its not a problem.