The more physical memory your VPS has, the more applications you'll be able to run concurrently. Some apps require a lot of RAM even when nothing else is running on the web server, even though they might not demand high CPU speeds or plenty of disk space. If your web server runs out of memory, it shall stop responding and the sites and the offline apps which you host on it will not work effectively, 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, therefore if you discover that your web server is close to the limit, you'll be able to take full 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 guarantee the proper performance of your scripts and stop concerning that your site visitors will see errors or will not be able to open your Internet sites at all.