Memory module

Two types of DIMMs (dual in-line memory modules): a 168-pin SDRAM module (top) and a 184-pin DDR SDRAM module (bottom).

Memory module is a broad term used to refer to a series of dynamic random access memory integrated circuits modules mounted on a printed circuit board and designed for use in personal computers, workstations and servers.

It can be used to these specific types of memory module:

• Dual in-line package memory
• SIPP memory, single in-line pin package memory
• SIMM, a single in-line memory module
• DIMM, dual in-line memory module
  • Rambus memory modules are a subset of DIMMs, but are usually referred to as RIMMs
  • SO-DIMM, small outline DIMM, a smaller version of the DIMM, used in laptops

Distinguishing characteristics of computer memory modules include voltage, capacity, speed (i.e., bit rate), and form factor.

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