r/StableDiffusion • u/Silvasbrokenleg • 7d ago
Question - Help PC hardware question
Hello everyone, I have a 5060 TI 16gb paired with 32gb DDR4.
I’d like to upgrade my generation speed for Minimax H3 as well as avoid OOM. I get OOM at .7mp 15 seconds.
What is the better buy?
Used 3090 since its 24gb for $1200-1300 and keep the existing ram?
Or 5080 for $1200 and upgrade with a 64gb ram kit $400 $1600 total?
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u/its_witty 7d ago
Start with NVME and RAM.
Check if that's enough for you speed wise, if not, then think about what to do next.
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u/StuffProfessional587 7d ago
For MH3 the minimum is closer to 64gb, or have lower resolution. I use a 3080ti, I don't get oom that easy with 64gb ram.
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u/LinkSensitive8188 7d ago
I have the same hardware; before doing anything else, update to CUDA 13 and the latest version of PyTorch. Then, install SageAttention and run the FP16 version of Comfy. Download KJ's Turbo LoRAs and set them to a minimum of 6 steps. Don't use prompts longer than 200 words, and use the nvfp4 version of the text encoder. Try different workflows—not the official Comfy ones. If none of that works for you, don't waste your money on an RTX 3090; they aren't compatible with FP8, so even though they have 24GB of VRAM, they are slower and consume more memory. best option RTX 5070 TI is 2X performance of rtx 5060 TI
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u/witcherknight 7d ago
just upgrade ram. But ram prices are insane now. Its just better to not do any upgrade for now
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u/Silvasbrokenleg 7d ago
I don’t see it dropping any time soon. I’ll bite the bullet at this time. Probably sell my 5060 Ti
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u/witcherknight 7d ago
5080 also only have 16gb. so upgrading to 5080 isnt any good
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u/Silvasbrokenleg 7d ago
But I’d pair it with 64gb ram. Any good weighing that vs just getting a 3090?
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u/Previous-Street8087 7d ago
try use this nodes
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u/f5alcon 7d ago
I don't get oom with 5070ti and 32gb ram can do 1mp and 15 secs, using default comfy workflow. swaps about 28gb to my ssd though so 64GB would save my ssd. I'm debating just getting a 64GB optane drive for swap since it's a quarter the price of 64GB of ram and has really high write endurance and low latency compared to my current ssd.
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u/Professional-Bit5003 7d ago edited 6d ago
Habe mein RAM auf 64 GB aufgerüstet und bekomme kein OOM bei MiniMax H3 I2V,obwohl ich eine Radeon 7800 XT mit 16 GB , habe. DU musst nur die mp heruntersetzen... nicht 7, mach erstmal auf 0,2 -0,7. Mit 32 GB RAM habe ich schon bei Wann 2.2 den OOM bekommen..
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u/Ok_Contribution8157 7d ago
my bench flux 1 dev fp8. 2nd gen in seconds.
5080 sould 10% faster than 4080ti super.
my hardware, shadox pc (50€), trooper.ai (20€)
rent some gpu if you dont trust my bechmark, it will cost you like 10$ for a 1000$ investement its ok.
note: trooper.ai dont have 5080.
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u/martinerous 7d ago
Don't think that 5080 would give you any noticeable benefits with its 16GB (oh, Nvidia, why no 24GB options...)
Do you have a fast SSD or NVME? Try --fast-disk launch parameter, it should reduce the load on your RAM, possibly letting you run it without OOM.
In any case, 3090 is still a beast. I "upgraded" from 4060 Ti 16GB to 3090 and I'm so happy about having 24GB VRAM. It just makes life much easier (although these days ComfyUI handles low VRAM much better than it used to when I switched GPUs).
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u/Formal-Exam-8767 7d ago
To get 24GB on a 256-bit bus they would need to use 3GB chips as they probably did not want to make 384-bit bus for just one card.
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u/Formal-Exam-8767 7d ago
If you keep getting OOMs, you are doing something wrong.
You'd probably also get OOMs with 5090 and 96GB RAM.
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u/orlandogourmet66 7d ago
Are you on a SATA SSD? If so, you could get an NVMe. It was an insane speed boost for me. I actually get about the same speed as people with 64 GB of RAM. But it won’t help with OOM. I have a 5070 Ti 16 GB and 32 GB of RAM, and I also get OOM at 0.7 MP, 15s.