How big should my Pagefile be?
To have Windows choose the best paging file size, click System managed size. The recommended minimum size is equivalent to 1.5 times the amount of RAM on your system, and 3 times that figure for the maximum size. Example, if you have 256 MB of RAM, the minimum size would be 384, the maximum size would be 1152.
For best performance, do not set the initial size to less than the minimum recommended size under Total paging file size for all drives. The recommended size is equivalent to 1.5 times the amount of RAM on your system. Usually, you should leave the paging file at its recommended size, although you might increase its size if you routinely use programs that require a lot of memory.
To delete a paging file, set both initial size and maximum size to zero, or click No paging file. Microsoft strongly recommends that you do not disable or delete the paging file.
To determine your preferred Pagefile size you should monitor your system and see how much RAM and virtual memory it uses. Do a baseline monitoring for a week or so (you can skip the baseline or shorten its duration if you know exactly how much Pagefile you need) and see what was the largest amount of memory your system ever used. If you see it never gets close to the maximum amount of RAM you have installed – don't worry. Your Pagefile is virtually left untouched (not exactly correct, because the system uses the Pagefile for some internal operations and it should keep it at around 5%-10% usage on normal systems). If, on the other hand, you see your system uses more memory than it physically has, this means it uses some Pagefile.
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Problems? See this thread at archive.org.
