The more physical memory your VPS has, the more programs you'll be able to run all at once. Some programs require plenty of RAM even if nothing else is running on the server, even though they might not demand high CPU speeds or loads of disk space. If your web server runs out of memory, it will stop responding and the Internet sites and the offline programs which you host on it won't work 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, so if you notice that your machine 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. This way, you could guarantee the proper functioning of your scripts and stop worrying that your site visitors shall see errors or will be unable to open your Internet sites at all.