Whenever an app is executed on a server, it's loaded into the physical memory. In case you run a resource-demanding script, or if you simply add more scripts on your websites and you get lots of visitors, you may encounter a scenario where your VPS has not enough memory to run all the apps and freezes for that reason, which means your sites shall stop operating adequately and that the website visitors shall start seeing error messages. To avoid this kind of a scenario, you could take advantage of the RAM upgrade that we are offering and increase the amount of physical memory available without changing the whole plan. In this way, you'll be able to pay only for the resources that you actually need and not for additional disk space or higher Central processing unit speeds which you will not really use, for example. With the upgrade, you can ensure the sleek functioning of your Internet sites, which also means a better experience for your visitors.