RAM, or Random Access Memory, is a form of computer data storage, that enables the info to be read randomly without accessing the preceding bytes before that. That makes the RAM substantially quicker than other types of storage devices like DVDs or HDDs where all of the info must be read so that you can access particular data. In case you have a shared hosting account, the amount of memory your web programs can use can't be fixed and may often depend on the free memory that's available on the physical server. Using a standalone server, however, there's always a minimum amount of physical memory which will be readily available at all times and won't be allocated to other clients even when it is not in use. That's valid with our virtual and dedicated hosting servers.