Whenever an application is executed on a server, it is loaded into the physical memory. If you run a resource-demanding script, or if you simply add more scripts on your sites and you get plenty of visitors, you might encounter a case where your Virtual Private Server has too little memory to run all the programs and freezes for that reason, which means that your websites shall stop working correctly and that the site visitors will start seeing error messages. To avoid this sort of a scenario, you can take advantage of the RAM upgrade that we're offering and increase the amount of physical memory at your disposal without changing the whole plan. That way, you can pay only for the resources that you actually need and not for additional disk space or higher Processor speeds which you won't really use, for example. With the upgrade, you can guarantee the sleek performance of your websites, which also means a better experience for your site visitors.