The more physical memory your VPS has, the more programs you'll be able to run simultaneously. Some apps require lots of RAM even if nothing else is running on the web server, even though they might not demand high Central processing unit speeds or plenty of disk space. If your web server runs out of memory, it shall stop responding and the Internet sites and the offline applications that you host on it will not function effectively, 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 packages, therefore if you notice that your server is close to the limit, you could take advantage of this upgrade without upgrading the whole package and paying for system resources that you won't use. That way, you could ensure the proper performance of your scripts and stop stressing that your visitors will see errors or will be unable to open your sites at all.