Does MSFS support SLI cards or multiple GPUs?

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I have a 3090 and for one of those magical moments in your life my brother does not uses his 3090 anymore. Before I embark in putting a 3090 SLI together (or just two graphic cards without bridge), new PSu, etc I was wondering if MSFS is capable of using the advatages of multiple GPUs. I fly VR and It needs massive GPU power.

Any guidance?

Thanks

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I’ll give you two guesses and both of them begin with N. Although there are some that use two computers for MSFS linked through a network there’s only one graphics output for the Sim (2 for VR)

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Shame then, maybe when they fully implement Dx12 they may take advantage of multi GPU support.

With the end of ETH mining in July will be many GPUs around for grab.

Thanks!

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SLI is pretty much dead.

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Yes but multi-GPU is thrilling, DX12 supports distributed CUDA on its framework that MSFS should be able to use if you have 2 graphic cards. Maybe one day!

Thanks

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And a board that’s takes them … a bit of a rarity these days although I expect there’s a 2 x 8 workaround.

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The fact that NVidia pretty much gave up on SLI themselves (only present on the 3090 class cards for people that use them for AI / machine learning) is the biggest hint here.
Don’t expect any modern games to support it anymore.

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Thanks To all of you.

I will abandon the project then until I heard any news of DX12 multiple GPU support in MSFS. I was looking for the Asus Z690 motherboard that supports 2 3090 but its a big investment for something that today wont work.

Thanks community!

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Yup … and I guess it’s because direct storage would be a non starter. I reckon you’d be needing yet to be invented DDR6 or Sli itself would be the bottleneck.

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When I think about multiple GPU, while each GPU costs USD 3000… That’s a lot of money even if it’s fully supported. I’m not really a fan of Multiple GPU, too power-hungry. And not to mention the heat. And I think the future is about efficiency to utilise a single GPU to its fullest potential.

Even graphics quality-wise while they are more complex than games from the last decade. The improvements are very much on making details and textures more efficient in rendering them. We’re not just adding more tesselation to create better graphics which requires more GPU to render. But it’s about how we can achieve the same result with the same hardware capability.

Besides, by the time we actually have a fully supported multi-gpu feature. We’re probably be sitting at 4090 or 5090 series instead. And who knows, even maybe it would be powerful enough or efficient enough to not need 2 of them.

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SLI is dead. nVidia have dropped support for it on all their consumer cards except the 3090. You’re not likely to see support for it in MSFS ever unless nVidia and AMD do a 180 course reversal and make multiple GPUs a thing again. And they’re not likely to do that.

Outside of professional rendering workloads or AI applications, there’s absolutely zero use for multiple bridged GPUs in this day and age nor going into the immediate future.

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Using SLI you‘d actually slow your 3090(s) down. Not what you want with such a card.

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You could listen to all the experts who say it’s impossible, will make it worse, set you PC on fire, cause mass hysteria, etc. They’re probably right.

I heard the same thing about enabling re-sizable BAR in the game profile. But I tried anyway and it helps when looking quickly side to side. Not so much with FPS when looking straight ahead, though.

So you could get a NVLink bridge and try editing the game profile with nvidia profile inspector. There are many SLI-enabling options in there, and they’re all turned off with the default game profile. See if you can find settings that make an improvement with two linked 3090s. You might be the first to discover something.

I’m not convinced that MS even wants to try. Last thing they need is someone to find that it improves things and then MS marketing has to contend with the press and forums saying that you need dual 3090’s to run VR smoothly.

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I was goinbg to spread a half inch of butter onto my circuit board but I’m told this isn’t compatible with MSFS under DX11.

Here’s hoping all will be fine under DX12.

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