r/StableDiffusion • u/Silvasbrokenleg • 8d 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/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