The more physical memory your Virtual Private Server has, the more apps you will be able to run concurrently. Some apps require lots of RAM even when nothing else is running on the web server, even though they might not require high Central processing unit speeds or lots of disk space. In the event your web server runs out of memory, it shall stop responding and the websites and the offline applications that you host on it will not work properly, as their software components shall not load since there won't be any free memory. In this light, we offer a RAM upgrade for our Virtual private server plans, therefore if you detect that your web server is close to the limit, you can make the most of this upgrade without upgrading the whole package and paying for system resources which you won't use. This way, you'll be able to guarantee the proper functioning of your scripts and stop stressing that your site visitors will see errors or will not be able to open your websites at all.