# DIMM

CEFR C2 · Noun

Source: https://englishreference.com/word/dimm
Updated: 2026-07-22

## Definition

Stands for Dual In-line Memory Module. A small circuit board that holds memory chips for a computer. You plug these into the motherboard to increase the amount of RAM.

For teachers: Abbreviation for Dual In-line Memory Module. A series of dynamic random-access memory integrated circuits mounted on a small circuit board and designed for insertion into a motherboard socket. It features independent electrical contacts on each side of the module, doubling the data path compared to older standards.

## Examples

- I need to install another DIMM to speed up my PC.
- Before purchasing the upgrade, check if your motherboard supports the specific speed and capacity of the new DIMM.
- Modern high-performance workstations often require matching pairs of DIMMs to take full advantage of multi-channel memory architectures and maximize data throughput.

## Usage notes

- Commonly used in technical specifications for desktop computers; laptops typically use the smaller SO-DIMM variant.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.