What is a dual in-line memory module (DIMM)?
Technical Blog / Author: icDirectory / Date: Apr 06, 2024 13:04
A Dual In-Line Memory Module (DIMM) is a widely used type of computer memory module that provides high-speed data storage and retrieval capabilities. Let%27s explore the details of DIMMs:

1. Definition:
- A DIMM is short for dual in-line memory module.
- It is a small circuit board that contains one or several random access memory (RAM) chips.
- DIMMs connect to the computer motherboard via pins.
- These modules store each data bit in a separate memory cell.

2. Key Characteristics:
- 64-Bit Bus: DIMMs use a 64-bit data path, allowing them to transfer data more quickly.
- Separate Memory Cells: Each data bit is stored in an individual memory cell.
- Common Usage: DIMMs are commonly used in desktops, laptops, printers, and other devices.

3. Types of DIMMs:
- Unbuffered DIMMs (UDIMMs):
- Used in desktop PCs and laptops.
- Quicker and cost less, but not as stable as registered memory.
- Commands are sent directly from the memory controller in the CPU to the memory module.
- Fully-Buffered DIMMs (FB-DIMMs):
- Used in systems requiring large capacities (servers, workstations).
- Utilize advanced memory buffer (AMB) chips to improve reliability and signal integrity.
- AMB bus is divided into read and write buses, allowing simultaneous reads and writes.

4. Recent Developments:
- Modern DIMMs based on DDR4 SDRAM chips use 288-pin connectors to connect to computer motherboards.
- Cooling structures are added to dissipate heat generated by higher chip density and clock speeds.

In summary, DIMMs provide efficient memory storage and data transfer capabilities, making them essential components in modern computing systems¹³⁴.


(1) Full Introduction to DIMM (Dual In-Line Memory Module). https://www.minitool.com/lib/dimm.html.
(2) Dual In-line Memory Module - DevX Tech Glossary. https://www.devx.com/terms/dual-in-line-memory-module/.
(3) Dual In-Line Memory Module (DIMM) Characteristics and Types .... https://www.spiceworks.com/tech/tech-general/articles/what-is-dimm/.
(4) . https://bing.com/search?q=dual+in-line+memory+module+(DIMM)+detail.
(5) What is Dual Inline Memory Module (DIMM)? - Definition ... - Techopedia. https://www.techopedia.com/definition/2768/dual-in-line-memory-module-dimm.
(6) undefined. https://phoenixnap.com/glossary/dimm-dual-in-line-memory-module.
(7) undefined. https://www.javatpoint.com/dimm.

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