Amazing Z-Image Workflow

A Z-Image-Turbo workflow, which I developed while experimenting with the model, it extends ComfyUI's base workflow functionality with additional features. It includes three versions that utilize different checkpoints to support various GPU VRAM capacities.

Features

• Eight configurable image styles for testing and experimentation.

• Versions in both .safetensors and .gguf formats to support a range of GPUs.

• Custom sigma values adjusted to my preference
  (subjectively better prompt adherence).

• Generated images are stored within the "ZImage" folder, organized by date.

• Includes a trick to enable CivitAI automatic prompt detection.

Workflow Overview

The zip file contains three workflow files, each optimized for different GPU VRAM capacities:

1. amazing_zimage-GGUF.json : Recommended for GPUs with 12GB or less VRAM.

2. amazing_zimage-GGUFSMALL.json : For GPUs with less than 8GB VRAM.

3. amazing_zimage-SAFETENSORS.json: Based directly on the ComfyUI example.

1. amazing_zimage-GGUF.json

Works smoothly with 12GB of VRAM or less, it may handle around 8GB as well.

• z_image_turbo-Q5_K_M.gguf (5.52 GB)
  local directory: ComfyUI/models/diffusion_models/

• Qwen3-4B.i1-Q5_K_M.gguf (2.89 GB)
  local directory: ComfyUI/models/text_encoders/

• ae.safetensors (335 MB)
  local directory: ComfyUI/models/vae/

2. amazing_zimage-GGUFSMALL.json

Optimized for GPUs with limited VRAM (less than 8GB),
though prompt accuracy might be affected.

• z_image_turbo-Q3_K_M.gguf (4.12 GB)
  local directory: ComfyUI/models/diffusion_models/

• Qwen3-4B.i1-Q2_K.gguf (1.67 GB)
  local directory: ComfyUI/models/text_encoders/

• ae.safetensors (335 MB)
  local directory: ComfyUI/models/vae/

3. amazing_zimage-SAFETENSORS.json

Based directly on the official ComfyUI example,
suitable for GPUs with around 12GB of VRAM or more.

• z_image_turbo_bf16.safetensors (12.3 GB)
  local directory: ComfyUI/models/diffusion_models/

• qwen_3_4b.safetensors (8.04 GB)
  local directory: ComfyUI/models/text_encoders/

• ae.safetensors (335 MB)
  local directory: ComfyUI/models/vae/

Required Custom Nodes

The workflows require the following custom nodes:
(which can be installed via ComfyUI-Manager or downloaded from their repositories)

• rgthree : https://github.com/rgthree/rgthree-comfy

• ComfyUI-GGUF: https://github.com/city96/ComfyUI-GGUF

License

This project is licensed under the Unlicense license.

More info: https://github.com/martin-rizzo/AmazingZImageWorkflow