The more physical memory your VPS has, the more applications you shall be able to run concurrently. Some applications require a lot of RAM even when nothing else is running on the web server, even though they may not demand high Processor speeds or lots of disk space. In the event your server runs out of memory, it will stop responding and the websites and the offline applications that you host on it shall not work properly, 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 notice that your machine is close to the limit, you'll be able to make the most of this upgrade without upgrading the whole plan and paying for resources that you won't use. This way, you could ensure the proper functioning of your scripts and stop worrying that your visitors shall see errors or won't be able to open your Internet sites at all.