The more physical memory your VPS has, the more programs you will be able to run at the same time. Some applications require a lot of RAM even if nothing else is running on the server, even though they might not require high CPU speeds or loads of disk space. In case your web server runs out of memory, it shall stop responding and the Internet sites and the offline applications which you host on it will not perform effectively, as their software components will not load since there will not be any free memory. In this light, we offer a RAM upgrade for our Virtual private server plans, therefore if you discover that your server is close to the limit, you may take advantage of this upgrade without upgrading the whole plan and paying for system resources that you will not use. That way, you'll be able to ensure the proper functioning of your scripts and stop worrying that your website visitors shall see errors or will not be able to open your sites at all.