Cache memory is RAM that a computer can access more quickly than it can access regular memory. RAM is random access memory, which means that you can add your own information. ROM is read only memory, which means that you can read the information, but you can't add to it. V-RAM is video random access memory. It stores image data for the computer.
RAM stands for random access memory.
Most RAM is volatile, which means that it requires a steady flow of electricity to maintain its contents. As soon as the power is turned off, whatever data was in RAM is lost. CPU stands for Central Processing Unit. The CPU is the brain of the computer. It runs computer programs, and directs the flow of information between different components of a computer.