bingle

That is what Microsoft recommends, but that's mostly so that naive users don't mess up their settings :-) It is better to set your page file size to a static amount, rather than letting Windows resize it, because when that resize occurs it is very slow - the OS has to find enough space for the additional data, and write it to disk, and then size it down again when you're done, and so forth. Also, if it has dynamic size, it will become fragmented over time when there isn't enough room for the whole file as one large block on the disk, and this can lead to other performance problems.

Bingle

Edit: although, actually, this is only for users who are most concerned with runtime performance. If you're more concerned with disk space usage, you're better off either disabling it, or letting Windows manage it for you.