Currently I'm running very large scenes for particle animations / simulations. I'm particularly concerned about the memory management distribution of the 2 3080 gpus approach for these very memory intensive renderings, so I ask the following:

Despite the significant VRAM differences between the (3080 / 3090) cards individually, I was hoping to get a better understanding of the possible trade-offs between 2 3080s vs 1 3090 for viewport rendering and scene rendering?

I'm totally fine with conceptual answers to this, since the cards haven't been released for purchase yet. And thanks a bunch for your insight.

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    $\begingroup$ VRAM could be extremely useful when rendering complicate scene. And double the GPU can not increase a single GPU available VRAM in general RTX, GTX card. Which mean VRAM is not extendable after purchase. If you got enough budget, I would strongly recommend single 3090 for the VRAM capacity. And if you want more computing power, purchase another 3090 $\endgroup$ – HikariTW Sep 14 '20 at 5:32
  • $\begingroup$ Hello and welcome. The cards aren't out yet, we can't make any educated guesses about anything ye. Either way this is mostly a personal preference/budget dependent decision, which is not a good fit for this site. Try blenderartists.org $\endgroup$ – Duarte Farrajota Ramos Sep 14 '20 at 11:40