If you use a VPS for online and offline programs, you may come across a situation where they don't operate effectively due to lack of physical memory. This may take place if you try to run an app which requires additional RAM than the amount your plan comes with, or if you have too many programs and some of them consume all the memory, leaving no free RAM for the others. Even if you get a powerful plan, this could happen if you include more apps on the hosting server at some point, and since it's possible that you shall need only more physical memory, but not higher Processor speeds or more disk space, we offer a RAM upgrade which you could use without changing your entire plan. Thus, you'll be able to pay only for the system resources that you really need and you can avoid errors on your websites caused by deficiency of memory and the inability of the Virtual Private Server to load the applications.