The recommended page file size in Windows depends on the amount of RAM installed in the system. Microsoft recommends that the page file be set to 1.5 times the amount of RAM installed on the system. However, it's also suggested that the page file size should not be less than the amount of RAM installed and also not less than the amount of RAM installed plus 300MB.
For example, if a system has 8GB of RAM installed, the recommended page file size would be 12GB (8GB x 1.5) or 8.3GB (8GB + 300MB).
It's important to note that if you have a lot of RAM installed, the system may not use the page file much at all, so it's suggested to set a lower size like the amount of RAM installed plus 300MB.
It is also important to note that the page file size settings can be adjusted based on the specific needs and usage patterns of the system. For example, if you are running memory-intensive applications or tasks, you may want to set the page file size to a larger value.
For 768MB RAM?
For a system with 768MB of RAM installed, Microsoft recommends setting the page file size to 1.5 times the amount of RAM, which would be 1152MB (768MB x 1.5). However, as I mentioned before it's also suggested that the page file size should not be less than the amount of RAM installed and also not less than the amount of RAM installed plus 300MB. So, in this case, it should be at least 1068MB (768MB + 300MB).
Please note that these are general guidelines, and the actual page file size required may vary depending on the specific usage patterns and requirements of the system. For example, if you are running memory-intensive applications or tasks, you may want to set the page file size to a larger value. It's also good to monitor the system's performance, if it's running smoothly with the set pagefile size, you may not need to adjust it.
System-managed page files automatically grow up to three times the physical memory or 4 GB (whichever is larger, but no more than one-eighth of the volume size) when the system commit charge reaches 90 percent of the system commit limit. This assumes that enough free disk space is available to accommodate the growth.