The more physical memory your VPS has, the more applications you shall be able to run simultaneously. Some pieces of software require plenty of RAM even if nothing else is running on the hosting server, even though they may not require high CPU speeds or lots 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 won't perform 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 Virtual private server packages, thus if you notice that your web server is close to the limit, you may take full advantage of this upgrade without upgrading the whole plan and paying for system resources which you won't use. This way, you could guarantee the proper functioning of your scripts and stop stressing that your site visitors shall see errors or will be unable to open your sites at all.