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What is a SIMM?

April 26, 2017SIMM

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What is a SIMM?

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SIMM (Single Inline Memory Module) is a device containing one or several random access memory (RAM) chips on a printed circuit board (PCB) with pins that connect to the motherboard. SIMMs are typically made in 30 pin and 72 pin packages and come in densities of 4MB-128MB. Most Pentium (64 bit data path) based systems require SIMMs to be installed in pairs. This was one reason for the invention of the DIMM, to save space.