SIPP memory

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For other meanings of the acronym SIPP, see SIPP.
Two SIPP memory modules

A SIPP or single in-line pin package[1] was a type of random access memory.

It consisted of a small printed circuit board upon which were mounted a number of memory chips. It had 30 pins along one edge which mated with matching holes in the motherboard of the computer.

This type of memory was used in 80286 and some 80386 systems. It was later replaced by SIMMs, which proved to be easier to install.

30-pin SIPP modules were pin compatible with 30-pin SIMM modules explaining why some SIPP modules were in fact SIMM modules with pins soldered onto the connectors.

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