Whenever a program is executed on a web server, it is loaded into the physical memory. If you run a resource-demanding script, or if you just add more scripts on your sites and you get a lot of visitors, you might encounter a scenario where your Virtual Private Server has insufficient memory to run all the programs and freezes because of this, which means that your sites shall stop functioning effectively and that the site 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 are offering and increase the amount of physical memory at your disposal without changing your entire plan. That way, you may pay just for the system resources you actually need and not for additional disk space or higher Processor speeds that you shall not really use, for example. With the upgrade, you'll be able to ensure the faultless functioning of your sites, which also means a better experience for your website visitors.