The more physical memory your VPS has, the more apps you will be able to run all at once. Some applications require plenty of RAM even when nothing else is running on the hosting server, even though they might not require high Processor speeds or loads of disk space. In the event your web server runs out of memory, it will stop responding and the websites and the offline applications 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 VPS packages, so if you detect 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 system resources which you won't use. In this way, you can ensure the proper functioning of your scripts and stop worrying that your site visitors shall see errors or will not be able to open your sites at all.