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DEFINITION
Random-access memory (RAM) refers to the chips that are used inside a PC to store instructions and data for processes that are running. Typically, these chips are located close to a CPU, and some are even built into the CPU itself. Unlike data stored on a hard disk (also a form of memory), most RAM is volatile; it requires electrical power to retain data.
MEMORY IS A lot like your health: You tend not to think about it unless there's a problem. In the case of computer memory, the problems are usually plodding system performance or applications that don't run properly
Whether they're inside a desktop PC, a notebook computer or a high-end network server, RAM chips play the critical role of keeping the CPU ef ficiently fed with data or instructions from programs on the hard drive. How well the chips perform this role means the difference between a CPU that misses computing cycles and moves like a steam locomotive and a CPU that speeds along like a bullet...