The more physical memory your VPS has, the more apps you shall be able to run at the same time. Some pieces of software require lots of RAM even when nothing else is running on the hosting server, even though they may not demand high CPU speeds or plenty of disk space. In the event your server runs out of memory, it will stop responding and the Internet sites and the offline programs you host on it will not perform properly, as their software components won't load since there will not be any free memory. In this light, we offer a RAM upgrade for our VPS solutions, thus if you discover that your server is close to the limit, you could take full advantage of this upgrade without upgrading the whole plan and paying for system resources that you won't use. That way, you could ensure the proper functioning of your scripts and stop stressing that your site visitors will see errors or will be unable to open your websites at all.