Updated: 11/13/2018 by Computer Hope

Short for dual in-line memory module, DIMM is a module containing a circuit board and one more random access memory chips. DIMMs have a 168-pin connector and, from the advent of the Pentium processor, a 64-bit path. Because of the new bit path, DIMMs can be installed one at a time, unlike SIMMs (single inline memory modules) that would require installation in pairs.

Computer 512 MB DIMM

SO-DIMM, which is short for small outline dual in-line memory module, is available in both a 72-pin and 144-pin configuration. SO-DIMMs are commonly utilized in laptop computers. Below is an example picture of a 4 GB SODIMM memory stick from Crucial.

SODIMM stick

Advantages DIMMs have over SIMMs

  1. DIMMs have separate contacts on each side of the board, which provides twice as much data as a single SIMM.
  2. The command address and control signals are buffered on the DIMMs. With heavy memory requirements, this buffering reduces the loading effort of the memory.

Computer acronyms, Connector, Dim, Hardware terms, Memory terms, Pentium processor, SATADIMM