
Paint Tool SAI is a popular digital art software with an easy interface, a blending option, and a line stabilizer. However, users often encounter the issue of high memory usage, which leads to error messages and an inability to complete their work. This is because the software can only utilize a limited amount of RAM, and creating large canvases or using multiple layers can quickly fill up the memory usage bar. While there are some workarounds, such as minimizing the number of open programs or using a different version of the software, these solutions do not always resolve the issue. Upgrading the RAM on one's device can help, but it is not always a feasible or affordable option. As such, many users are left seeking alternative solutions or software that can accommodate their creative needs without the same memory constraints.
| Characteristics | Values |
|---|---|
| Does Paint Tool SAI benefit from more memory? | Yes, more RAM helps reduce memory load errors. |
| How much RAM is required? | Minimum 2-4GB, 8GB is good enough, more than 8GB is good. |
| How to increase memory in Paint Tool SAI? | Close unnecessary programs running in the background, avoid multiple canvases, put layers together. |
| How does memory usage vary with canvas size? | Larger canvases consume more memory. |
| How does memory usage vary with version? | SAI Ver.1 (32-bit) uses up to 4GB RAM, SAI Ver.2 (64-bit) uses more than 4GB RAM. |
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What You'll Learn

Paint Tool SAI 2's memory usage
SAI Ver.1 can only use up to 4GB of RAM due to being a 32-bit application. However, SAI Ver.2 offers a 64-bit version that can utilize more than 4GB of RAM, which should help alleviate some memory issues. Nevertheless, some users have reported that even with the 64-bit version, they encounter memory load errors when working on large canvases or complex projects.
The memory usage bar in Paint Tool SAI 2 indicates the amount of RAM available on the device. Creating a large canvas can quickly fill up the memory usage bar, and adding layers and brush strokes will also contribute to memory usage. Users have reported that opening the program can result in high memory usage, with the bar starting at 95% even before any work is done.
To mitigate these issues, users have suggested minimizing the number of layers, avoiding multiple open canvases, and closing unnecessary programs running in the background. Additionally, ensuring sufficient RAM capacity can help, as one user noted that their RAM of around 11GB helped manage memory issues, although they still had to make some adjustments like deleting the background of their drawings.
While Paint Tool SAI 2's memory usage can be a challenge, understanding its behavior and following optimization strategies can help users work more effectively within the software.
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How to increase memory
Paint Tool SAI is a popular software for digital art, however, it is known to have some memory load issues. Users have reported that the software can only reserve up to 4 GB of RAM, which can cause problems when working on large files or complex projects.
To increase the memory available to Paint Tool SAI, there are a few potential solutions:
- Use the 64-bit version: The 32-bit version of Paint Tool SAI can only allocate up to 4 GB of RAM, even if more memory is available on the computer. Upgrading to the 64-bit version, if available, will allow the software to access more memory.
- Increase maximum canvas size: One user reported that they were able to mitigate the memory load issue by increasing the maximum canvas size in SAI's options. However, this did not work for another user who reported the same problem.
- Close other applications: Freeing up memory by closing all other applications and programs can help reduce the memory load on Paint Tool SAI.
- Delete unused applications: Removing unused applications and programs from your computer can help free up memory and improve performance for Paint Tool SAI.
- Upgrade hardware: If you are working with large files or complex projects that require more than 4 GB of RAM, you may need to upgrade your hardware. This could involve purchasing and installing additional RAM or opting for a more powerful computer that can handle the memory requirements of your projects.
It is important to note that some of these solutions may not work for everyone, and the effectiveness may depend on your specific hardware and software setup. Additionally, there may be a new version of Paint Tool SAI in development that can address the memory limitations, but it is unclear when it will be released.
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Memory load errors
Paint Tool SAI is a popular software among artists and art enthusiasts. However, some users have reported issues with memory load errors. These errors can occur when the software tries to access more memory than is available, leading to an "insufficient memory" or "Not enough memory, edit canceled" message.
One user reported that they were unable to start Paint Tool SAI 2 due to an insufficient memory error, despite having ample hard disk space. They tried deleting unnecessary files and programs, but the issue persisted. Another user experienced a similar problem on Windows 10, where the system showed that there was enough memory available, but the software still gave an error.
In some cases, the issue might be related to the operating system or the specific version of Paint Tool SAI. For example, one user suggested that Windows 10 might not be fully compatible with the software, and updating SAI could help. Another user mentioned that the 32-bit version of the software can only allocate up to 4GB of memory, even if more is available on the computer.
To address memory load errors, users have tried various methods, such as increasing the maximum canvas size, closing other applications, and deleting unused programs. However, these solutions do not always work, and some users have had to resort to using older versions of the software or switching to different art software entirely.
It is important to note that while increasing the amount of RAM on a device may help with overall performance, it may not specifically resolve the memory load errors experienced in Paint Tool SAI. The software's limitations, such as the absence of a 64-bit version, can restrict its ability to utilize additional memory.
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32-bit vs 64-bit versions
Paint Tool SAI is a lightweight program, weighing in at just over 5 MB. However, it uses relatively more memory than other programs due to the absence of memory compression. The memory allocation per pixel is 64-bit instead of 32-bit, causing the same picture to consume twice as much memory.
The 32-bit version of Paint Tool SAI can only allocate up to 4 GB of memory, even if more memory is available in the system. This limitation can be an issue when working with large images or multiple layers, as it is easy to reach the memory limit.
The 64-bit version of Paint Tool SAI 2 removes this limitation, allowing users to work with much larger images without encountering memory issues. With the 64-bit version, the memory limit is increased to up to 100,000 x 100,000 pixels, providing a significant improvement over the 32-bit version.
While the 64-bit version offers improved memory management, it is important to note that it still lacks certain features, such as text input. Additionally, some users have reported minor hardware compatibility issues with specific devices, such as the Samsung Notebook 9 Pro and the Wacom EMR digitizer.
Overall, the 64-bit version of Paint Tool SAI 2 offers enhanced stability and performance, particularly when working with large images or complex projects. However, it is always recommended to ensure that your system meets the program's requirements and to stay updated with the latest versions to take advantage of performance improvements and bug fixes.
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Minimising memory usage
Paint Tool SAI is a popular software for digital art, however, users often face issues with memory load errors. The software has a limitation on memory allocation, which can hinder the creation of large files or complex artworks with many layers. The 32-bit version of the software can only allocate up to 4GB of memory, even if more is available on the system. This can lead to "Not enough memory" errors, preventing further work on the project.
To minimise memory usage and avoid such errors, there are several steps that users can take:
- Reduce the number of layers: Since each layer consumes memory, limiting the number of layers can help reduce memory usage.
- Optimise canvas size: While increasing the maximum canvas size may not reduce memory usage, starting with a smaller canvas and working up can help manage memory consumption.
- Close other applications: Running multiple applications simultaneously can increase memory usage. Closing other programs, such as web browsers or media players, can free up memory for Paint Tool SAI.
- Delete unused applications: Removing applications that are no longer needed can help free up memory and reduce the overall memory footprint of the system.
- Clean up system files: Deleting unused files and programs can help optimise memory usage and improve the performance of Paint Tool SAI.
- Defragment the hard drive: Defragmentation reorganises data on the hard drive, improving performance and potentially reducing memory usage.
- Update to 64-bit version: If possible, updating to the 64-bit version of Paint Tool SAI can allow the software to utilise more than 4GB of memory, reducing the likelihood of memory errors.
By following these steps, users can minimise memory usage and maximise the efficiency of Paint Tool SAI, allowing them to create more complex artworks without encountering memory load errors.
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Frequently asked questions
No, Paint Tool SAI 1 can only use 4GB of RAM as it is a 32-bit application.
Yes, SAI 2 has a 64-bit version which can work with more than 4GB of RAM.
On Windows, go to the search bar, search for "System" and then "About". You will then be able to see your memory information.
You can minimise memory usage issues by putting layers together after finishing drawing on them, not having multiple canvases open at the same time and closing unnecessary programs running in the background.





























