In case you use a VPS for online and offline applications, you might come across a case where they don't function effectively as a result of lack of physical memory. This may happen if you try to run an app which requires additional RAM than the amount your package includes, or in case you have too many applications and some of them consume all the memory, leaving no free RAM for the others. Even when you get a powerful plan, this could happen if you include more programs on the hosting server later on, and since it's possible that you will need just 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. That way, you could pay only for the system resources that you really need and you'll be able to avoid errors on your Internet sites caused by deficiency of memory and the inability of the VPS to load the programs.