[ The PC Guide | Introduction to the PC | Overview of Systems and Components ]

System Memory

The system memory holds all of the "active" information that the computer is using. When you turn the computer on the memory is empty. Each program or data file you load uses part of the system memory. When you close a program the memory is freed up for other uses. Generally, the more memory your system has, the more things you can do with it simultaneously. Increasing the amount of memory in the system also improves performance in most cases.

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