Graphics card setup - best performance for 3dsmax/Vantage

[Robert1977]

Dear Chaosgroup team,

could you tell which graphics setup would deliver a better performance for the setup 3dsmax in live-link with Vantage:

2 Nvidia RTX Ada 5000 or
1 Nvidia RTX Ada 6000?

I have heard from Simeon i believe that the scale of having 2 cards instead of 1 is by approx. 40%. So is it possible that both setups deliver nearly the same? Except that I have more memory availabe on the Ada 6000? Or is it better to have two cards, since 3dsmax can use one in Vray GPU mode and Vantage the other?
Also in regards to future application like stereoscopic display, are two cards better than one?

Thanks in advance
Robert

[npg]

This is not a question that we can answer accurately. It depends on many factors. There is no such thing as "it scales 40%" - it varies depending on hardware and settings. The important thing to remember is that adding a second GPU puts a cap on framerate, determined by the bus speed between the GPUs. How low the cap is depends on resolution and render elements (including those required by the denoisers). Therefore NVLINK is best, followed by the different PCI-e generations where each new one has twice the bandwidth of the one before. If the shading for the scene takes long enough, your framerate will not hit the cap and you will benefit from the additional compute power of the second GPU.

Note that even with NVLINK the memory pool of the two GPUs is not shared like V-Ray GPU allows. So one "big" GPU may be a good idea if your scenes hardly fit into the smaller GPU's memory.

All of the above has been discussed on the forum several times already.

BTW, we've recently made some improvements for multi-gpu which will be released in 2.6.0.

[vasile_bulgac1]

Dear Chaosgroup team,

could you tell which graphics setup would deliver a better performance for the setup 3dsmax in live-link with Vantage:

2 Nvidia RTX Ada 5000 or
1 Nvidia RTX Ada 6000?

I have heard from Simeon i believe that the scale of having 2 cards instead of 1 is by approx. 40%. So is it possible that both setups deliver nearly the same? Except that I have more memory availabe on the Ada 6000? Or is it better to have two cards, since 3dsmax can use one in Vray GPU mode and Vantage the other?
Also in regards to future application like stereoscopic display, are two cards better than one?

Thanks in advance
Robert

From personal experience, I'd say to go with a RTX 6000 Ada. I have this card and making a comparation of my old RTX A6000 which I have sold it earlier this year, what I was rendering in 6-8h (max. 6K res.) on the A6000 now I can render in 2-3h with the RTX 6000 Ada (8K 4320p res.).

I know the card is damn expensive but for Vantage is a Holy Grail.

[npg]

I have heard from Simeon i believe that the scale of having 2 cards instead of 1 is by approx. 40%.

I replied

There is no such thing as "it scales 40%"

thinking that this was about adding a second card vs using one card of the same type. But I just realized maybe you and Simeon were discussing 2x5000 vs 1x6000, which on paper is around 40% indeed (both when comparing 2x5000 vs 1x6000 and when comparing 1x6000 vs 1x5000). As I described earlier, how well a second GPU scales in Vantage in practice is a bit complicated and it doesn't always scale as well as V-Ray GPU.

[Robert1977]

Dear Nikola, thanks for the clarification and sorry for the confuse question from my side.