That's the 'old' school answer; with small slow memory and small, very slow HDDs. He has a fine SSD, the extra 'resources' required are minuscule. The best answer is the one that gets @ShangWang on his way.Technically, incorrect.
If you use a system managed pagefile then the pagefile size is regularly changing. This 'resizing' of the pagefile does take extra CPU and drive resources.
@USAFRet answer does this with nothing for the OP to worry about. It's time to let this one rest