jngzsz posted at 2:28 AM Thu, 20 July 2023 - #4470635

Hello partners.

Does anyone know how many GPUs the Superfly supports?

Cycles has been tested with 8+. So I would assume as many as you have slots for. I have seen screenshots of people using 3 in Superfly.

Motherboards and cpus are the main issue with that thou. Even thou there are motherboards out there with 4 slots or more, you need to research the settings on them before buying them. Some boards will allow for the 16x to be split into 4x,4x,4x,4x. Others will not even if they have 4 full size slots, because 8x,8x, is the best it can split up the bus.

Keep in mind that there are diminishing returns with multiple GPUs. The renders take longer to set up, and only benefit when high samples are used on large renders.

I bought a 4070ti the other day, and I am beyond impressed with the speed it renders using Optix. It will run at nearly 3 ghtz (I have seen 2.850ghtz during many renders) right out of the box, without overclocking it at all.... Yes, it is slightly factory overclocked, and it is a smaller form factor card with 3 90mm fans, about 2.6 ish slots wide and about 12 inches long. (Zotac Trinity OC). You are far better off with the newer RT and Tensor cores for Optix rendering. Here are examples of why that is the case.

I did this as a test with my new card. Less than 7 seconds with simple hair, takes a little longer if there are more transmission layers with more complex hair.. This used the Intel denoise post processing set to about 0.5. If you don't want to use denoise, it will take a bit longer to clean up. But we are talking seconds here. I think the longest I have let a render go is 2 min with this card.

My 4070ti is just shy of a 300 watt card. And then fans don't even come on doing a single render. Less heat comes out of the system than it did with a 2060, even when playing games at 4k. How much you spend to run a system is just as important as what it costs to build it.

If you do game, the 4070ti averages 140-160 fps in Shadow of the Tomb Raider at 4k using DLSS, on a system that is gpu bound (no cpu bottleneck). 200 plus in Horizon Zero Dawn with DLSS, and Skyrim is about 200 and doesn't use DLSS, and it is modded extensively with 4k textures. The system doesn't even get hot when doing so. 63-65c at the cores is the highest I have seen while gaming, with the default fan curve.... My 2060 struggled at 1k, and generated a lot more heat with the fans howling..... 

So do you want a render box that wont do much of anything else because the cards are on a slow bus, heats the house and runs the power meter off the wall? 

Or a system that can do lots of things, renders very fast, and it doesn't heat the house while spinning the meter off the wall? And also cost far less to build....

If your rendering movies for a studio, a render box is the way to go. But other than that, not so much....

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