# LGA 1155

> Intel CPU socket

**Wikidata**: [Q136257](https://www.wikidata.org/wiki/Q136257)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/LGA_1155)  
**Source**: https://4ort.xyz/entity/lga-1155

## Summary
LGA 1155 is an Intel CPU socket, also known as Socket H2, designed for Intel processors. It succeeded LGA 1156 and was followed by LGA 1150 in Intel's CPU socket lineup.

## Key Facts
- LGA 1155 is an Intel CPU socket, also known as Socket H2
- It succeeded LGA 1156 and was followed by LGA 1150
- The socket is manufactured by Intel, an American multinational technology company founded on July 18, 1968
- Intel's headquarters are located in Santa Clara, California, United States
- The socket has 21 sitelinks and is described in multiple languages including English, German, Spanish, French, Italian, Japanese, and others

## FAQs
### Q: What processors are compatible with LGA 1155?
A: LGA 1155 is compatible with Intel processors designed for this socket, including second and third-generation Intel Core processors (Sandy Bridge and Ivy Bridge architectures).

### Q: What is the difference between LGA 1155 and LGA 1156?
A: LGA 1155 succeeded LGA 1156 and offered improvements in processor support, including compatibility with newer Intel Core processors and enhanced features.

### Q: What replaced LGA 1155?
A: LGA 1150 replaced LGA 1155 as Intel's mainstream CPU socket, offering support for fourth-generation Intel Core processors (Haswell architecture).

## Why It Matters
LGA 1155 represents a significant evolution in Intel's CPU socket technology, bridging the gap between older and newer processor architectures. As Socket H2, it provided a platform for second and third-generation Intel Core processors, enabling improved performance and efficiency for desktop computers. The socket's design allowed for better power delivery and thermal management compared to its predecessor, LGA 1156. Its widespread adoption by motherboard manufacturers made it a popular choice for both consumers and system builders during its lifecycle. LGA 1155's compatibility with both Sandy Bridge and Ivy Bridge processors offered users flexibility in upgrading their systems without changing motherboards, representing a balance between forward compatibility and cost-effectiveness in the computer hardware market.

## Notable For
- Successor to LGA 1156, marking Intel's transition to second-generation Core processors
- Support for both Sandy Bridge and Ivy Bridge architectures, offering two generations of processor compatibility
- Introduction of Intel's Smart Response Technology for improved storage performance
- Enhanced power delivery and thermal management compared to previous socket designs
- Widespread adoption in desktop computing, becoming a standard platform for mainstream Intel processors

## Body
### Technical Specifications
LGA 1155 features 1155 protruding pins in a grid array pattern, hence its name. The socket is designed to support Intel's second and third-generation Core processors, including Sandy Bridge and Ivy Bridge architectures. It uses a land grid array (LGA) design where the pins are located on the socket rather than on the processor, allowing for more reliable connections and easier installation.

### Processor Support
The socket supports a wide range of Intel processors, including:
- Second-generation Intel Core processors (Sandy Bridge)
- Third-generation Intel Core processors (Ivy Bridge)
- Select Pentium and Celeron processors based on these architectures

### Features and Capabilities
LGA 1155 introduced several key features:
- Support for dual-channel DDR3 memory
- Intel Turbo Boost Technology 2.0 for dynamic performance scaling
- Intel Hyper-Threading Technology on supported processors
- Enhanced Intel SpeedStep Technology for improved power efficiency
- Intel Virtualization Technology for improved virtual machine performance

### Motherboard Compatibility
The socket is compatible with various chipset families, including:
- Intel 6 Series chipsets (e.g., H67, P67, Z68)
- Intel 7 Series chipsets (e.g., Z77, H77, Q77)
- Intel 8 Series chipsets (e.g., Z87, H87, Q87)

### Legacy and Impact
LGA 1155 played a crucial role in Intel's desktop processor ecosystem during its active period. Its support for two processor generations made it a cost-effective platform for users looking to upgrade their systems incrementally. The socket's design and features influenced subsequent Intel socket designs, contributing to the evolution of CPU socket technology in the computer hardware industry.

## References

1. Freebase Data Dumps. 2013