How to Install ComfyUI in 2023 - Ideal for SDXL!

Nerdy Rodent
3 Aug 202314:09

TLDRThe video discusses the limitations of the automatic 1111 web interface for using SDXL 1.0 and introduces Comfy UI as a more efficient alternative. It highlights Comfy UI's lower resource usage, especially when using the refiner, and provides a step-by-step guide for installation on various platforms. The video also demonstrates how to set up and run Comfy UI, including downloading and using SDXL model files, and explores example workflows and advanced configurations for enhanced image generation.


  • 🌟 The automatic 1111 web interface has some limitations, such as memory leaks and a less than ideal refiner usage.
  • πŸ’» Comfy UI offers a better alternative with improved performance and resource management, resulting in lower RAM and VRAM usage.
  • πŸ“ˆ Comfy UI's resource usage for a 1024 by 1024 image was recorded at under 16GB of RAM and around 12GB of VRAM when using the high VRAM option.
  • πŸš€ The installation of Comfy UI is straightforward, with portable and standalone options available for novice computer users, especially on Microsoft Windows.
  • πŸ“¦ 7-Zip software is required to unzip the files for the portable version of Comfy UI.
  • πŸ”§ Installation instructions are provided for various platforms, including Windows, Linux, and even Google Colab for those using an Nvidia GPU.
  • πŸ›  Users need to download the relevant model files for Comfy UI, such as the base and refiner models for the SDXL workflow, from sources like Hugging Face.
  • πŸ“‹ The Comfy UI interface can be complex with many nodes and tiny text, but examples and workflows are provided to guide users.
  • 🎨 Users can customize their workflows by adjusting various settings such as guidance scale, sampler name, and step controls for both the base and refiner models.
  • πŸ“· Comfy UI supports upscaling and contrast fixing options, allowing users to enhance their images further.
  • πŸ”„ The script encourages users to experiment with the basic workflow before moving on to more advanced configurations and options.

Q & A

  • What are the main issues with the automatic 1111 web interface in terms of system performance?

    -The automatic 1111 web interface has problems with memory leakage when swapping models, which can lead to low RAM, slow system performance, or even system crashes.

  • How does Comfy UI compare to the automatic 1111 web interface in terms of resource usage?

    -Comfy UI is more resource-efficient, using just under 16 GB of RAM and around 12 GB of VRAM for a 1024 by 1024 image, compared to the automatic interface which often uses over 32 GB of RAM and sometimes much more with the low VRAM option.

  • What is the main drawback of Comfy UI's user interface?

    -The main drawback of Comfy UI's interface is that it is not very user-friendly, with spaghetti nodes everywhere and tiny text that requires zooming in to read, making it less comfortable for users who are not familiar with the system.

  • How can a novice computer user install Comfy UI on Windows?

    -A novice computer user can install Comfy UI on Windows by downloading a portable standalone build, which requires familiarity with downloading and unzipping files. The user must also have 7-Zip software installed to unzip the file.

  • What are the installation options for users with different types of GPUs?

    -Comfy UI provides installation options for both Nvidia and AMD GPUs, with specific instructions for each. There are also options for users on Linux and those with Apple Mac silicon, as well as direct ML for AMD cards on Windows.

  • How can users get started with Comfy UI after installation?

    -After installation, users need to download the required model files from hugging face, place them in the Comfy UI models checkpoints directory, and then run the software using the command 'python' with the appropriate options for their setup.

  • What is the purpose of the 'minus-minus help' option when running Comfy UI?

    -The 'minus-minus help' option provides a list of available options that users can utilize for further customization, such as setting different ports, extra model path configs, auto launch, and force FP32.

  • How can users find and use example workflows in Comfy UI?

    -Users can find example workflows on the Comfy UI GitHub page under 'Comfy UI Examples'. They can download images of these workflows and load them into Comfy UI to understand the setup and process better.

  • What are the additional features of the advanced Saitan SDXL workflow in Comfy UI?

    -The advanced Saitan SDXL workflow includes extra options like two positive prompts, a linguistic positive, supporting terms, negative and positive aesthetic scores for the refiner, upscaling models, contrast fix, and an upscale mixed diffusion option for improved image quality.

  • What is the recommended number of refiner steps for generating an image?

    -The recommended number of refiner steps is no more than 10 for most output preferences, although this can be adjusted based on the user's desired output appearance.

  • How can users upscale images using Comfy UI?

    -Users can upscale images by selecting an upscaling model and using the contrast fix and upscale mixed diffusion options in the advanced workflow. This process enhances the image detail and quality.



πŸ–₯️ Introduction to Comfy UI and its Advantages

This paragraph introduces the Comfy UI as an alternative to the automatic 1111 web interface for using the sdxl 1.0 model. It highlights the issues with the automatic interface, such as memory leaks and system slowdowns, and presents Comfy UI as a solution with better resource management. The paragraph also discusses the installation process for different user levels, including novice computer users and those familiar with Python and Anaconda. It emphasizes the ease of installation and the benefits of using Comfy UI, such as lower RAM and VRAM usage compared to the automatic interface.


πŸ“š Setting Up Comfy UI and Model Files

This paragraph delves into the specifics of setting up Comfy UI, including the installation process for Windows and Linux users, and the necessary steps for using AMD GPUs on Linux and Apple Mac silicon. It instructs users on downloading and placing the sdxl model files and the refiner in the correct directory. The paragraph also covers the process of running Comfy UI with the '' script and the various command-line options available for customization. Additionally, it touches on the use of the 'auto launch' option for convenience.


🎨 Exploring Comfy UI's Workflows and Features

The paragraph discusses the workflow and features of Comfy UI, including the use of text prompts and the generation of images. It explains how to load and run example workflows, the process of zooming in to understand the spaghetti nodes, and the importance of adjusting settings according to one's needs. The paragraph also covers the advanced options available in the Comfy UI, such as the use of positive and negative prompts, aesthetic scores, upscaling models, and contrast fixing. It encourages users to experiment with the basic workflow before moving on to more advanced configurations.



πŸ’‘Nerdy Rodent

The term 'Nerdy Rodent' seems to be the title or theme of the video, suggesting a focus on a particular aspect of technology or computing that is of interest to enthusiasts. It could be a metaphorical way of referring to a complex or specialized topic that is being discussed in detail, akin to how a 'rodent' might burrow deep into a subject matter. In the context of the script, it likely refers to the intricate exploration of software and technology tools related to AI and image processing.


The term 'Geekery' refers to the activities or interests associated with people who are highly knowledgeable and enthusiastic about a particular field, often technology or computing. In the context of the video, 'Geekery' is used to describe the detailed and technical aspects of software and hardware discussed, which would be of interest to those passionate about or deeply involved in the tech world.

πŸ’‘sdxl 1.0

'sdxl 1.0' appears to be a specific version or iteration of a software or technology being discussed in the video. It is likely related to AI or machine learning models, given the context of the script which discusses memory leaks, refiner usage, and system resource management. The term suggests a focus on the capabilities and limitations of this particular version, as well as potential alternatives that offer better performance or user experience.


RAM, or Random Access Memory, is a type of computer memory that is used to store data that the system needs to access quickly. In the context of the video, RAM is a critical resource for running the discussed software, as it can affect the performance and stability of the system when using AI models and image processing tools. The script mentions the importance of managing RAM usage to prevent system slowdowns or crashes.


A 'Refiner' in the context of the video script refers to a component or process within AI or image processing software that is used to enhance or improve the quality of outputs, such as images. It seems to be a tool or feature that works in conjunction with models like 'sdxl 1.0' to achieve better results. The script discusses the limitations of the refiner in the automatic interface and how 'comfy UI' offers a better implementation.

πŸ’‘Comfy UI

In the context of the video, 'Comfy UI' appears to be an alternative user interface or software platform for running AI models and image processing tasks. Despite its potentially confusing name, it is described as offering better resource management, lower RAM usage, and a more efficient refiner process compared to 'sdxl 1.0'. The term 'UI' stands for 'User Interface', emphasizing the focus on improving the user experience.

πŸ’‘Resource Usage

Resource usage refers to the consumption of system resources, such as processing power, memory, and storage, by a particular software or process. In the context of the video, the focus is on how different software options, like 'sdxl 1.0' and 'Comfy UI', manage these resources when running AI models and image processing tasks. Efficient resource usage is crucial for maintaining system performance and preventing crashes or slowdowns.


VRAM, or Video RAM, is a type of memory used to store image data that is being processed by the GPU (Graphics Processing Unit). In the context of the video, VRAM usage is discussed in relation to the resource demands of different software interfaces for AI and image processing. Efficient VRAM usage is important for ensuring smooth graphics performance and preventing graphical glitches or system crashes.


In the context of the video, 'Installation' refers to the process of setting up and preparing software or a user interface for use on a computer system. The script provides detailed instructions on how to install 'Comfy UI', including options for different types of users and systems, such as Windows, Linux, and even Google Colab. Proper installation is essential for users to begin utilizing the software effectively.


A 'Workflow' in this context refers to a sequence of steps or procedures followed to complete a particular task or project, such as generating images with AI models. The script discusses different workflows for using 'Comfy UI' and 'sdxl 1.0', highlighting the efficiency and user-friendliness of the former. Understanding workflows is important for users to effectively utilize the software and achieve desired outcomes.


In the context of the video, 'Upscaling' refers to the process of increasing the resolution or quality of an image. This is often done to enhance the details and clarity of the image, making it suitable for larger displays or higher-quality prints. The script mentions upscaling as a feature in the advanced workflow, where an original image is processed to achieve a higher level of detail.


Introduction to More Nerdery Rodent and issues with the automatic 1111 web interface, such as memory leaks and system slowdowns.

Comparison of the automatic 1111 interface with Comfy UI, highlighting the latter's efficiency in resource usage and better refiner utilization.

Installation instructions for Comfy UI, including portable options for novice users and different setup methods for Windows, Linux, and Google Colab.

Explanation of the resource usage benefits when using Comfy UI, especially for low-end GPUs.

Detailed guide on setting up Comfy UI using Anaconda for Python users.

Instructions for downloading and using the required model files for Comfy UI, including the base and refiner models.

Demonstration of how to run Comfy UI and use its interface, including the node structure and text prompts.

Showcase of the workflow for generating an image using Comfy UI, from loading the checkpoint to saving the output.

Explanation of the extra options available in Comfy UI for advanced users, such as setting different ports and model path configurations.

Presentation of the Comfy UI GitHub page examples, which provide pre-made workflows for users to load and use.

Overview of the basic workflow for generating an image with Comfy UI, including the use of positive and negative prompts and the refiner process.

Discussion on the advanced workflow options, such as using multiple positive prompts and aesthetic score settings.

Explanation of upscaling and contrast fixing options available in the advanced workflow for enhancing image quality.

Recommendation to experiment with the basic workflow before moving on to more advanced configurations.

Introduction to the Satan SDL1 Comfy UI configuration file, offering a more complex workflow for users to explore.

Conclusion and invitation to check out further nerdy rodent and geekery content in subsequent videos.