Whenever a program is executed on a server, it's loaded into the physical memory. In case you run a resource-demanding script, or if you just add more scripts on your Internet sites and you get plenty of visitors, you might encounter a case where your VPS has insufficient memory to run all the applications and freezes for that reason, which means that your sites will stop operating properly and that the visitors will start seeing error messages. To avoid this type of a scenario, you may take advantage of the RAM upgrade that we're offering and increase the amount of physical memory available without changing the whole plan. In this way, you may pay just for the system resources which you actually need and not for additional disk space or higher Central processing unit speeds that you shall not really use, for example. With the upgrade, you'll be able to ensure the sleek operation of your websites, which also means a better experience for your site visitors.