The more physical memory your VPS has, the more apps you'll be able to run all at once. Some apps require a lot of RAM even if nothing else is running on the web server, even though they might not demand high Central processing unit speeds or loads of disk space. In the event your web server runs out of memory, it shall stop responding and the websites and the offline apps that you host on it will not perform properly, as their software components will not load since there won't be any free memory. In this light, we offer a RAM upgrade for our VPS plans, therefore if you notice that your hosting server is close to the limit, you may take full advantage of this upgrade without upgrading the whole package and paying for system resources which you won't use. This way, you can ensure the proper operation of your scripts and stop concerning that your visitors shall see errors or will be unable to open your Internet sites at all.