Whenever an application is executed on a web server, it's loaded into the physical memory. If you run a resource-demanding script, or if you simply add more scripts on your websites and you get plenty of visitors, you may encounter a situation where your Virtual Private Server has too little memory to run all the apps and freezes as a result, which means that your sites shall stop functioning properly and that the visitors will start seeing error messages. To avoid this kind of a scenario, you'll be able to take advantage of the RAM upgrade that we're offering and increase the amount of physical memory available without changing your entire plan. This way, you'll be able to pay only for the resources you actually need and not for additional disk space or higher CPU speeds that you will not really use, for instance. With the upgrade, you can ensure the faultless operation of your sites, which also means a better experience for your website visitors.