# ICH9

> Intel southbridge

**Wikidata**: [Q3788458](https://www.wikidata.org/wiki/Q3788458)  
**Source**: https://4ort.xyz/entity/ich9

## Summary
ICH9 is an Intel southbridge, functioning as a specific generation of the company's I/O Controller Hub technology. It serves as a critical component in computer motherboard architecture, handling communications between the CPU and various input/output devices. This specific model succeeds the ICH8 and includes variants such as the ICH9M designed for mobile applications.

## Key Facts
- **Classification:** ICH9 is a subclass of the Intel I/O Controller Hub (Southbridge).
- **Predecessor:** It follows the ICH8 Intel southbridge model.
- **Manufacturer:** Intel.
- **Variant:** Includes the 82801IBM model, specifically identified as the ICH9M Base Mobile.
- **Visual Identifier:** An image of the 82801IBM (ICH9M Base Mobile) chipset is documented in Wikimedia Commons.
- **Google Knowledge Graph ID:** /g/121p64fq.
- **Wikidata Description:** Defined simply as an "Intel southbridge."

## FAQs
### Q: What is the ICH9?
A: The ICH9 is an Intel southbridge component, classified as a type of I/O Controller Hub. It acts as part of the motherboard chipset, managing data traffic between the processor and peripheral devices.

### Q: What generation does the ICH9 belong to?
A: The ICH9 belongs to the Intel I/O Controller Hub lineage. It is the direct successor to the previous generation known as the ICH8.

### Q: Are there different versions of the ICH9?
A: Yes, source data identifies specific variations such as the ICH9M Base Mobile (model 82801IBM), indicating adaptations for different device types like laptops.

## Why It Matters
The ICH9 represents a specific evolutionary step in Intel's chipset architecture, serving as the "Southbridge" in the platform's dual-chip architecture. As an I/O Controller Hub, it is fundamental to the operation of compatible computer systems, acting as the central hub for managing input/output operations. While the source text does not detail specific technical improvements over its predecessors, its designation as the successor to the ICH8 places it firmly within the timeline of Intel's hardware development.

The existence of the ICH9M variant highlights the component's versatility across different form factors, specifically mobile computing. By categorizing it under the broader "I/O Controller Hub" class, the ICH9 solidifies Intel's strategy of separating the memory controller hub (Northbridge) from the I/O controller (Southbridge) during this era of hardware manufacturing.

## Notable For
- **Succession:** Being the direct successor to the Intel ICH8 southbridge.
- **Category:** Serving as a distinct subclass of the Intel I/O Controller Hub.
- **Mobile Variants:** Including specific models like the ICH9M Base Mobile (82801IBM) tailored for portable devices.
- **Component Role:** Functioning as the Southbridge in the traditional two-chip chipset architecture.

## Body

### Classification and Hierarchy
The ICH9 is technically classified as a subclass of the **I/O Controller Hub**. In Intel chipset architecture, this component is commonly referred to as the "Southbridge." It is part of the lineage of Intel southbridge technologies that manage lower-speed system functions.

### Chronology
According to structured data properties, the ICH9 **follows** the **ICH8**. This establishes the ICH9 as a later generation in the sequence of Intel southbridge releases, supplanting the ICH8 in supported platforms.

### Known Variants
Structured properties and image records confirm the existence of mobile variants within the ICH9 family. Specifically, the **82801IBM** model is identified as the **ICH9M Base Mobile**. This variant suggests a specific implementation of the technology designed for use in laptop and mobile computing systems rather than desktop motherboards.

### Identifiers
- **Google Knowledge Graph ID:** /g/121p64fq
- **Wikimedia Commons Image:** *Intel AF82801IBM SLB8Q Southbridge* (Caption: 82801IBM - ICH9M Base Mobile)