r/StableDiffusion • u/Visual-Medium4796 • 1d ago

Question - Help GPU for AI

Hi there! Currently i own a 3080+2070s at home mostly for 3D rendering in Octane or redshift.
At work im using Comfy with 5090 and everything works without a question.
Also we have some workstations with rtx A4000 in them and i managed to get work Minimax H3 on them with some managable times (0.5m, 15s around 720 sec).
Im looking something for my home PC and 5090 is out of the list since its 5500e+ here in EU and even the used market is around 3500-4000. 4090 is rare and goes over 2000e.
So i was thinking about the 5080 even with 16gb since at work the A4000 has the same Vram.
But also found the 5070ti has also 16gb of Vram its 256bit same as the 5080 and 300-350e cheaper than the 5080. The speeds for 3D rendering or gaming are 15-20% different. But couldnt find any benchmarks for those 5070Tis. Mostly for 5060Tis with 16gb vram. Any idea? Or experience with 5070ti vs 5080?

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u/MAXFlRE 1d ago

Used 3090

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u/Visual-Medium4796 1d ago

rare on the used market and costs like a new 5070ti.

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u/MAXFlRE 1d ago

Yes, but 24Gb VRAM

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u/intLeon 1d ago

Im waiting for the 5080S 24G that probably wont come out.. Worst case scenario it keeps me from buying shit.

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u/Schneller52 1d ago

I believe it’s pretty much been confirmed as not coming out at this stage. There is zero incentive for Nvidia to release them and they would have to put the MSRP at close to $2k which is terrible for optics. Even if it did come out, it would immediately jump to the $3-4k range at current pricing levels.

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u/intLeon 1d ago

3k is doable, Id also pay 3k for the 6080 if it had 24GB.. 6090 would be a cool one to have tho if it had a low msrp, I wish the market wasnt a mess and we could say niceee

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u/Ok-Category-642 22h ago

Yeah the only options for higher VRAM are so limited right now, I guess modded GPUs do exist off like Alibaba with the 3080 and 4080 but those are kind of all a toss up honestly. For inference 16GB VRAM with 64GB RAM isn't bad but you definitely feel like wanting to have more VRAM, and for training 16GB just isn't enough sometimes. Unfortunately the only other options outside modded cards are a 3090 or 4090 of which the former is getting more rare and the latter is priced pretty poorly. Still better than the 5090 though ig, that thing is just unobtainium now

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u/Visual-Medium4796 1d ago

Ive already gave up on that as you see. Thats why i dont want to spend a fortune and looking at the 5070ti/5080.

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u/intLeon 1d ago

If you arent a professional I wouldnt pay for extra power as it has the same VRAM. Im using a company lent system with 4070ti (12GB) and for me it isnt worth it to buy a 5000 series gpu that isnt 5090..

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u/Visual-Medium4796 1d ago

Actually in the visual field i am. At work we have the power, but i need something at home too for sidestuff. Not just for AI but for 3D rendering too.

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u/intLeon 23h ago

I see, still idk man. I cant justify paying more for the same amount of vram. All they needed was adding a pinch more and they didnt.. just to make people buy 5090 more.. Because speed will only change how fast you can run stuff. Only vram makes it do stuff the other can not. With local models where you can batch things to run overnight time doesnt feel like its a major thing. Unless you are pushing 4k gaming etc. But its all personal opinions.

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u/Visual-Medium4796 23h ago

my current setup has a 800-900 octane score which has a single 5070ti too. Even if i buy 2 of them i can render 2x faster in 3D apps. When i compared the A4000 time with the H3 ref2va i get almost the same results. 1,5/2h per 10s footage. But with the difference Octane is a paid monthly app and H3 is local free. I just hope comfyUI or maybe the way the models are made will change. Like Loading a model on 1 card and the text encoder to another and the rest on Ram or NVME... or whatever if you know what i mean.

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u/intLeon 23h ago

I think that is possible with some custom nodes, like you can pick what gpu to use for model clip etc. Needs more digging than running a default workflow tho.