Overview
On Windows, the portable installation is distributed as a compressed archive. After downloading and extracting it, the user starts ComfyUI with the batch file that matches the available hardware. A system with a compatible NVIDIA GPU uses the NVIDIA batch file. CPU-only execution and Apple M1 or M2 systems are also supported, but CPU execution is much slower. An NVIDIA GPU is the more practical choice for serious local generation because it provides faster execution and broader compatibility with other open-source AI tools.
The portable installation archive can be approximately 1.4 GB, while a selected checkpoint can be approximately 6.4 GB. These sizes illustrate an operational constraint: local image generation requires both storage capacity and download time. Additional checkpoints, upscalers, ControlNet models, and custom-tool assets increase that requirement.
Place SafeTensors checkpoint files in: