Random Access Memory (RAM) is a type of data storage commonly used on computers. It can be used to store information that is currently being used and is constantly being read from and written to. RAM is volatile memory; when the power is turned off, RAM loses any information that it is storing.
Unlike other forms of data storage, such as hard drives and flash memory, RAM is extremely fast and is suitable for quickly accessing data. This makes it ideal for running applications and software, as these require access to data at a very rapid rate. RAM also allows computers to run multiple tasks at once in the same way that a person is able to multitask.
When purchasing RAM, two key factors to consider are the type of RAM and the amount of RAM. There are two main types of RAM, DDR3 and DDR4, both of which have varying speeds and capacities. Higher speeds and more capacity normally translate to better performance, but require higher upfront costs. The amount of RAM required depends on the type and number of apps that will be used.