Hello there and thanks for checking out this workflow!
→ outdated at this point; I recommend using this workflow instead :
ComfyUI—SD3—The Awakening

—Purpose—

This is just a first "little" workflow for SD3 as many are probably going to look for one in the coming days.
So far it is incorporating some more advanced techniques, such as:

• multiple passes including tiled diffusion

• inpainting on the spot
  (Take this with a grain of salt, but, according to hearsay, SD3 is said to have generated imperfect anatomy on one or more occasions,... allegedly)

• upscaling

I've built in safeguards to keep the resolution always as a multiple of 64 no matter the upscale parameters you choose. By default it upscales from 896x1152 → 1984x2496
Many parts are explained further via notes as I usually like to document thoroughly.

—Custom Nodes used—

• ComfyUI-Custom-Scripts

• ComfyUI-Easy-Use

• ComfyUI-Impact-Pack

• ComfyUI-KJNodes

• ComfyUI-TiledDiffusion

• ComfyUI_essentials

• ComfyMath

• rgthree-comfy

• was-node-suite-comfyui

• cg-use-everywhere

All of which can be installed through the ComfyUI-Manager

If you encounter any nodes showing up red (failing to load), you can install the corresponding custom node packs through the 'Install Missing Custom Nodes' tab on the ComfyUI Manager as well.

—Thanks—

The workflow would not be possible as is without these custom node packs. If you want to show your appreciation to the node creators, drop them a ⭐ on their github repos! Thank you!

Feel free to ask any questions, share improvements or suggestions in the comment section!