If you use a VPS for online and offline applications, you could come across a case where they don't function properly because of lack of physical memory. This may take place if you try to run a program that requires more RAM than the amount your package deal includes, or in case you have too many apps and some of them consume all the memory, leaving no free RAM for the others. Even if you get a powerful package, this may happen if you add more applications on the web server in the future, and since it is possible that you will require simply more physical memory, but not higher CPU speeds or more disk space, we provide a RAM upgrade which you could use without changing your entire plan. Thus, you can pay just for the system resources that you really need and you'll be able to avoid errors on your websites caused by insufficient memory and the inability of the VPS to load the programs.