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new Nvidia 3000 series cards for Fusion, future-proofing

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rsf123

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new Nvidia 3000 series cards for Fusion, future-proofing

PostFri Sep 04, 2020 2:41 am

Any thoughts on whether the Nvidia 3070 and 3080 only having 8GB and 10GB of VRAM respectively being enough for Fusion, and future-proofing for Fusion needs?

(There's already another forum thread discussing general issues of the new Nvidia cards, so this thread is specifically me wanting comments on Fusion. https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=120906&p=664464&hilit=3080#p664450 ).
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UserNoah

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Re: new Nvidia 3000 series cards for Fusion, future-proofing

PostMon Sep 07, 2020 6:25 pm

Just my subjective experience/opinion:

For Fusion standalone you probably won't see a huge increase in speed compared to other GPUs. At least right now.
I've used Fusion on machines with GTX680M, GTX780, GTX980, GTX 1080 and I am using the RTX 2060 super right now. An increase in render speed was not really noticable. Factors like RAM and VRAM are in my opinion more important.
Of course the higher the VRAM the better.

At this point in time the bottlenecks seem to be VRAM and actually getting all information to the GPU and back. Maybe the faster memory in the 3000 series could potentially have an bigger impact on this than the actual calculation power.

This could of course change as Blackmagic has made more and more tools use the GPU. Maybe in future releases the whole node branch can run on the GPU and profit more from better GPU specs.
And who knows maybe they'll add machine learning or AI stuff that can maybe utilize the more specialized cores, although I doubt it as they seem to prioritize Mac or at least try to be hardware agnostic.
Difficult to speculate as we know very little about Blackmagics plans with Fusion.

So my consensus right now would be to prioritize VRAM over raw power which make the 3000 series a good choice but for me (RTX 2000) no reason to upgrade right now (at least for Fusion, other applications I'm using would profit more)
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Kel Philm

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Re: new Nvidia 3000 series cards for Fusion, future-proofing

PostTue Sep 08, 2020 8:17 pm

I have an AMD TR 3970x, 2080ti, NVME drives and 128GB 3200 Ram. I rarely ever get above 40% utilisation on anything and that's even on heavy comps. I don't think Fusion is at all optimised for current levels of hardware.
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jayfro

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Re: new Nvidia 3000 series cards for Fusion, future-proofing

PostSat Sep 12, 2020 2:14 am

Before going Mac a month ago I had a Threadripper 3960x with a 2080ti and 128gb of 3200mhz ram using a Sabrent Rocket as a cache drive and another fast nvme drive to put my footage on. I had some larger 3D projects in Fusion that would render cache up to 94gbs of RAM on playback in the Fusion tab. And I think they could have used more RAM to play back without any slowdown etc. So, if I had to prioritize anything for a Resolve build, it would be RAM for large Fusion projects.

Just my 2 cents, everyone has different needs etc for motion graphics work.
PC Specs
Mac OS Catalina 10.15.6 (Latest)
2020 16 inch Macbook Pro
2.3ghz 8 core processor, 5600m 8gb graphics card, and 64gb of RAM
Resolve 16.2.7
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Kel Philm

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Re: new Nvidia 3000 series cards for Fusion, future-proofing

PostSat Sep 12, 2020 11:31 pm

Sorry, I should have noted my 128gb Ram would get fully utilised. Fusion will cache everything it can so it does fill up on large comps.

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