# SO-DIMM

> variant of DIMM in a smaller form factor

**Wikidata**: [Q1156060](https://www.wikidata.org/wiki/Q1156060)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/SO-DIMM)  
**Source**: https://4ort.xyz/entity/so-dimm

## Summary
SO-DIMM (Small Outline Dual In-Line Memory Module) is a compact variant of the DIMM memory module, designed for use in space-constrained devices like laptops, tablets, and compact computers. It retains the functionality of standard DIMMs but in a smaller form factor, enabling high-density memory in portable electronics. SO-DIMMs are not interchangeable with full-size DIMMs due to physical and electrical differences.

## Key Facts
- **Form Factor**: Smaller than standard DIMMs, optimized for compact systems (e.g., laptops, tablets).
- **Parent Class**: Memory module (discrete PCB with mounted memory chips).
- **Subclasses**: Includes DDR, DDR2, DDR3, and DDR4 SO-DIMM variants.
- **Aliases**: SODIMM, laptop DIMM, Small Outline DIMM.
- **Applications**: Primary memory in laptops, all-in-one PCs, and other space-limited devices.
- **Characteristics**: Smaller physical size compared to DIMMs; compatible with specialized slots.
- **Documentation**: Featured in 17 Wikidata sitelinks and a dedicated Wikipedia category.

## FAQs
### Q: What is the difference between SO-DIMM and DIMM?
A: SO-DIMM is a smaller, compact version of DIMM, designed for laptops and space-constrained devices, while standard DIMMs are larger and used in desktops and servers.

### Q: Where are SO-DIMMs typically used?
A: SO-DIMMs are primarily used in laptops, tablets, all-in-one PCs, and other portable or compact computing systems requiring low-profile memory modules.

### Q: Can SO-DIMM be used in a standard DIMM slot?
A: No, SO-DIMMs are physically and electrically incompatible with standard DIMM slots due to differences in size, pin configuration, and voltage requirements.

## Why It Matters
SO-DIMM plays a critical role in enabling the development of portable and compact computing devices. Its smaller form factor allows manufacturers to integrate high-capacity memory into laptops, tablets, and other space-efficient systems without sacrificing performance. This innovation directly supports the demand for lightweight, powerful electronics in consumer and enterprise markets. By adapting to successive memory technologies (e.g., DDR, DDR4), SO-DIMM has remained a versatile solution for memory upgrades in portable devices, driving advancements in mobile computing and device miniaturization.

## Notable For
- **Compact Design**: Smaller than standard DIMMs, enabling use in thin laptops and tablets.
- **Adaptability**: Available in multiple generations (DDR, DDR2, DDR3, DDR4) to align with evolving memory standards.
- **Specialized Use**: Primary memory solution for portable electronics, distinct from desktop-oriented DIMMs.

## Body
### Definition and Purpose
SO-DIMM is a memory module designed to provide high-density RAM in a smaller physical footprint than traditional DIMMs. It serves as the primary memory component in laptops, tablets, and other compact systems where space efficiency is critical.

### Form Factor and Design
- **Size**: Smaller than standard DIMMs, with a compact PCB layout.
- **Compatibility**: Requires specific SO-DIMM slots, incompatible with full-size DIMM interfaces.
- **Aliases**: Commonly referred to as SODIMM, laptop DIMM, or Small Outline DIMM.

### Applications
- **Primary Use**: Memory upgrades for laptops, all-in-one PCs, and embedded systems.
- **Key Markets**: Consumer electronics (e.g., tablets, 2-in-1 devices) and enterprise portable workstations.

### Variants
- **Generations**: Includes DDR, DDR2, DDR3, and DDR4 SO-DIMM variants, each aligned with respective memory technology standards.
- **Technical Specifications**: Specifications (e.g., speed, capacity) vary by generation but adhere to the smaller form factor requirement.

### Physical Characteristics
- **Visual Identification**: Examples include the Samsung 1GB DDR3 SO-DIMM and DDR SO-DIMM slots (referenced in image metadata).
- **Documentation**: Featured in Wikimedia Commons galleries and categorized under "SO-DIMM" on Wikidata.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Thing",
  "name": "SO-DIMM",
  "description": "Variant of DIMM in a smaller form factor",
  "sameAs": [
    "https://www.wikidata.org/wiki/Q15241312",
    "https://en.wikipedia.org/wiki/SO-DIMM"
  ],
  "additionalType": "memory module"
}

## References

1. Freebase Data Dumps. 2013