The more physical memory your Virtual Private Server has, the more applications you will be able to run at the same time. Some applications require plenty of RAM even if nothing else is running on the server, even though they might not demand high CPU speeds or lots of disk space. In case your server runs out of memory, it'll stop responding and the sites and the offline programs that you host on it shall not function properly, as their software components won't load since there won't be any free memory. In this light, we offer a RAM upgrade for our Virtual private server plans, thus if you discover that your machine is close to the limit, you could make the most of this upgrade without upgrading the whole package and paying for system resources which you won't use. That way, you'll be able to guarantee the proper functioning of your scripts and stop stressing that your visitors will see errors or will not be able to open your websites at all.