Short for unbuffered (or unregistered) dual inline memory module, UDIMM is a type of volatile memory chip, used mostly in desktop and laptop computers. It is a conventional type of RAM. Modern DDR memory chips are a type of UDIMM.

UDIMM usually runs faster than RDIMM (registered dual inline memory module) in systems with only one or two modules per memory channel. However, in computers that use three or more modules per channel, such as high-end workstations and servers, RDIMM can increase efficiency and reduce latency.

Computer acronyms, Memory terms, RDIMM

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