What is the “dual” in DIMM?

DIMM is an acronym for Dual Inline Memory Module. To what does the “dual” part of a DIMM refer?

A) The electrical contacts on a DIMM are different on each side

B) DIMMs are twice the size of SIMMs

C) DIMMs must be installed in pairs

D) Memory chips are installed on both sides of a DIMM

E) DIMM memory modules have really bad mood swings

The answer: A) The electrical contacts on a DIMM are different on each side

The electrical contacts on a SIMM (Single Inline Memory Module) share the same electrical connection. The contacts on a DIMM are different on each side, thus the “dual” notation.

Want to know more? Watch “Memory Slots.” There have been many different memory slot formats through the years. In this video, you’ll learn the difference between SIMMs, RIMMs, DIMMs, and SO-DIMMs.