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