Stable diffusion up to 50% faster? I'll show you.

Sebastian Kamph
22 Nov 202204:22

TLDRThe video introduces a method to significantly boost render speeds for users with specific Nvidia graphics cards (1000, 2000, 3000, or 4000 series). By incorporating the xformers library into Stable Diffusion, users can enhance rendering performance by 50% or more, depending on their card's capabilities. The process is quick and straightforward, involving a few adjustments in the Stable Diffusion settings and restarting the application. The video encourages viewers to test this trick and share their results in the comments for comparison.


  • πŸš€ Users with Nvidia graphics cards from the 1000 to 4000 series can significantly speed up their renders.
  • πŸ“ˆ The performance boost can be up to 50%, depending on the specific Nvidia card model.
  • πŸ”§ The process involves adjusting settings within the Stable Diffusion software and requires a text edit.
  • πŸ“ A prompt from a library is used as a starting point for the demonstration.
  • 🌟 The default sampling steps are set to 50 for the purpose of this speed demonstration.
  • πŸ”„ Batch count is set to 4 and a specific seed is used for consistent results in testing.
  • πŸ“Š The initial render speed on an Nvidia 3080 is approximately 8.28 iterations per second.
  • πŸ› οΈ By adding 'xformers' as a command-line argument, the render speed can be improved.
  • 🎯 After applying the 'xformers' optimization, the render speed increases to around 10.17 iterations per second.
  • πŸ“ˆ The improvement varies by card model, with some seeing a 5% increase and others up to 50%.
  • πŸ’¬ The video creator encourages viewers to share their results and graphics card model in the comments for comparison.

Q & A

  • What is the claim made at the beginning of the script?

    -The claim is that you can speed up your renders by about 50% using a specific method.

  • What are the necessary requirements to apply the speed improvement method?

    -You need to have an Nvidia graphics card from the 1000, 2000, 3000, or 4000 series, which includes Pascal, Turing, Ampere, Lovelace, or Hopper architectures like the H100.

  • How long does it take to implement the speed improvement method?

    -The method can be implemented in about three seconds.

  • What is the software used in the script example?

    -The software used is Stable Diffusion.

  • What is the initial speed of the render iterations per second on a 3080 Nvidia card?

    -The initial speed is about 8.28 iterations per second.

  • What is the name of the library that assists in speeding up the rendering process?

    -The library is called xformers.

  • What is the expected improvement in render speed after applying the xformers library?

    -The expected improvement ranges from a 5% increase to up to a 50% increase, depending on the specific Nvidia card used.

  • How does the xformers library help with rendering?

    -The xformers library helps by optimizing cross-attention in stable diffusion, which aids in the rendering process.

  • What is the recommended way to apply the xformers library to Stable Diffusion?

    -You should open the Stable Diffusion folder, open the Webui-user file with Notepad, and add 'xformers' as a command line argument, then save and restart Stable Diffusion.

  • What will happen the first time you apply the xformers library?

    -The first time you apply it, Stable Diffusion will install xformers and then launch the web UI with the xformers arguments, applying the cross-attention optimization.

  • How can users share their results after applying the speed improvement method?

    -Users are encouraged to comment on the video with their results, including how much faster their renders are and the graphics card they are using for comparison.



πŸš€ Boosting Render Speed with Nvidia Cards

The paragraph introduces a method to significantly increase rendering speed by 50% for users with specific Nvidia graphics cards. It mentions that the trick is applicable for cards from the 1000, 2000, 3000, and 4000 series, including Pascal, Turing, Ampere, Lovelace, and Hopper architectures. The speaker proposes to demonstrate the process in Stable Diffusion, a machine learning model, by adjusting settings and incorporating a library called 'xformers' to optimize rendering. The expected outcome is a notable increase in iterations per second, showcasing the efficiency of the method.




In the context of the video, 'renders' refers to the process of generating images or visual outputs from a computer program, specifically in relation to Stable Diffusion, a deep learning model used for creating AI-generated images. The term is central to the video's theme as it discusses methods to speed up this rendering process, which is crucial for improving efficiency and output in graphic design and AI-generated content creation.

πŸ’‘Nvidia card

An 'Nvidia card' refers to a graphics processing unit (GPU) manufactured by Nvidia, a company known for its high-performance GPUs used in gaming, professional visualization, and AI computing. The video specifies that the technique to speed up renders applies to certain Nvidia card series, such as the 1000, 2000, 3000, and 4000 series, which includes the Pascal, Turing, Ampere, and Lovelace architectures, as well as the Hopper series like the H100.


Pascal is the name of an architecture used in Nvidia's GPU lineup. It represents a significant leap in performance and efficiency compared to its predecessors. In the video, the Pascal architecture is mentioned as one of the compatible technologies for the render speed improvement trick, indicating that GPUs based on this architecture and newer would benefit from the optimization.


Turing is another GPU architecture developed by Nvidia, succeeding Pascal. It introduced new features and improvements, particularly in the area of AI and ray tracing, which are essential for rendering realistic graphics. The video includes Turing in the list of compatible architectures for the render speed enhancement, highlighting its relevance for users with this generation of Nvidia GPUs.


Ampere is the name of a subsequent GPU architecture by Nvidia, following Turing. It further advances the capabilities of GPUs, especially in terms of performance and energy efficiency. The video's mention of Ampere signifies that GPUs based on this architecture are also compatible with the render speed optimization technique being discussed.


Lovelace is the codename for an upcoming GPU architecture from Nvidia, succeeding Ampere. Although not yet released at the time of the video, its inclusion in the script suggests that the render speed optimization technique will also be applicable to this future generation of Nvidia GPUs, indicating forward compatibility and the continuous evolution of technology.


Hopper refers to a specific line of high-performance GPUs from Nvidia, known for their advanced capabilities in AI and deep learning tasks. The mention of the Hopper architecture in the video, particularly the H100 model, indicates that these specialized GPUs are also within the scope of devices that can benefit from the render speed optimization method.

πŸ’‘Stable Diffusion

Stable Diffusion is an AI model used for generating images from textual descriptions. It is a type of deep learning technology that has gained popularity for its ability to create detailed and often realistic images. In the video, the focus is on optimizing the rendering process of Stable Diffusion, which is central to the content creation aspect of the video.

πŸ’‘sampling steps

In the context of the video, 'sampling steps' likely refers to the number of iterations or steps taken during the rendering process to refine the output image. The video sets the sampling steps to 50 to ensure a faster rendering process without compromising the quality of the output, illustrating the importance of balancing performance and quality in image generation tasks.

πŸ’‘batch count

The 'batch count' in the video refers to the number of simultaneous rendering tasks that the GPU can handle at once. By adjusting the batch count to 4, the video demonstrates how increasing this number can contribute to a higher overall rendering throughput, which is a key aspect of improving efficiency in AI-generated image creation.


Xformers, as mentioned in the video, is a library or set of tools designed to optimize the rendering process of AI models like Stable Diffusion. The integration of Xformers with Stable Diffusion is presented as a method to enhance rendering speed, suggesting that this library provides algorithms or techniques that allow for more efficient computation during the image generation process.


The ability to speed up renders by about 50% using an Nvidia card.

The process can be completed in about three seconds.

Compatibility with Nvidia cards from the 1000 series to the 4000 series, including Pascal, Turing, Ampere, Lovelace, and Hopper architectures.

The method is likely to work for Nvidia cards not older than 2016.

Demonstration within Stable Diffusion with a prompt from a library.

Setting sampling steps to 50 for optimal speed.

Adjusting the batch count to 4 and setting a specific seed for consistent results.

Initial render speed of 8.28 iterations per second on a 3080 Nvidia card.

Improvement through the addition of xformers library with command line arguments.

Restarting Stable Diffusion to apply xformers cross-attention optimization.

A significant increase in render speed from 8.3 to 10.17 or 10.2 iterations per second.

The render speed improvement varies depending on the specific Nvidia card used.

A simple three-second fix can lead to a notable increase in rendering speed.

Invitation for users to test the method and share their results in the comments.

A call to like and subscribe for more content and to ensure videos are shown more frequently.