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dynamic RAM Last modified: Friday, May 15, 1998

A type of physical memory used in most personal computers. The term dynamic indicates that the memory must be constantly refreshed (reenergized) or it will lose its contents. RAM (random-access memory) is sometimes referred to as DRAM (pronounced dee-ram) to distinguish it from static RAM (SRAM). Static RAM is faster and less volatile than dynamic RAM, but it requires more power and is more expensive.