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