The more physical memory your VPS has, the more apps you'll be able to run concurrently. Some pieces of software require a lot of RAM even if nothing else is running on the server, even though they may not require high Central processing unit speeds or plenty of disk space. In case your web server runs out of memory, it'll stop responding and the sites and the offline applications that you host on it shall not function 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 VPS plans, therefore if you discover that your server is close to the limit, you can take full advantage of this upgrade without upgrading the whole package and paying for system resources that you will not use. In this way, you'll be able to guarantee the proper performance of your scripts and stop stressing that your site visitors will see errors or won't be able to open your Internet sites at all.