The more physical memory your Virtual Private Server has, the more apps you will be able to run all at once. Some pieces of software require loads of RAM even if nothing else is running on the web server, even though they might not demand high CPU speeds or loads of disk space. If your server runs out of memory, it shall stop responding and the websites and the offline apps which you host on it will not function effectively, 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 detect that your machine is close to the limit, you can make the most of this upgrade without upgrading the whole plan 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 concerning that your visitors shall see errors or will not be able to open your sites at all.