Many geeks argue about the system pagefile and whether or not you should disable it, or alter it at all for that matter. The first thing that you need to actually be aware of is what a pagefile is and what it actually does. When your system is running low on RAM, Windows moves the pages of memory that are being least used into a hidden file known as pagefile.sys, which is located in the root of one of the drives on your computer. The purpose behind this is to free more RAM up so that the applications you are using can benefit from that additional RAM.
If you have had one application minimized for some time, and another application is hogging your RAM, then Windows is going to take memory away from the lesser-used applications so that it may be allocated to the program that you are currently using.
Some people say that you should disable the pagefile because Windows tends to be really inefficient when it comes to using it. If you have enough RAM on your computer then there is really no reason for you to be using the pagefile anyway, and this is why many people recommend that you simply disable it. When you disable the pagefile, you are essentially forcing the Windows operating system to keep all the programs in the much faster RAM at all times.
The problem behind this logic is that it is only going to impact one single scenario, which is switching to an app that you were not previously using. This is not going to grind your hard drive when the pagefile has been disabled, but it is not going to make your PC any faster either, since Windows never would have paged the application anyway. With this in mind, it is ultimately up to you to decide whether or not to disable it on your computer.