# Radeon HD 5870

> graphics card by ATI Technologies

**Wikidata**: [Q4047940](https://www.wikidata.org/wiki/Q4047940)  
**Source**: https://4ort.xyz/entity/radeon-hd-5870

## Summary
The Radeon HD 5870 is a high-performance desktop graphics card released by ATI Technologies in 2009 as part of the Radeon HD 5000 series. Built on a 40 nm process with the TeraScale 1 microarchitecture, it features 1600 shading units and supports DirectX 11, OpenGL 4.4, and OpenCL 1.2. Known by its codename "Cypress," it was designed for gaming and professional graphics applications.

## Key Facts
- Released in 2009 as part of the ATI Radeon HD 5000 series
- Built on 40 nm lithography process using TeraScale 1 microarchitecture
- Contains 2.154 billion transistors and a die area of 334 mm²
- Base clock frequency of 850 MHz with 1600 shading units and 80 texture mapping units
- Supports PCI Express and GDDR5 memory
- Thermal Design Power (TDP) of 188 watts
- Supports DirectX 11, OpenGL 4.4, and OpenCL 1.2 instruction sets
- Also known as "Radeon HD 5870 Eyefinity 6" for multi-display configurations

## FAQs
### Q: What are the key specifications of the Radeon HD 5870?
A: The Radeon HD 5870 features 1600 shading units, 80 texture mapping units, a base clock of 850 MHz, and 2.154 billion transistors on a 334 mm² die. It uses GDDR5 memory and has a TDP of 188 watts.

### Q: What technologies does the Radeon HD 5870 support?
A: It supports DirectX 11, OpenGL 4.4, and OpenCL 1.2, making it capable of advanced graphics rendering and parallel computing tasks.

### Q: What is the codename of the Radeon HD 5870?
A: The Radeon HD 5870 is codenamed "Cypress," referring to its GPU architecture.

## Why It Matters
The Radeon HD 5870 represented a significant leap in graphics processing technology when it launched in 2009. As one of the first GPUs to support DirectX 11, it enabled more realistic gaming experiences with advanced tessellation, compute shaders, and multi-threading capabilities. Its introduction of Eyefinity technology allowed users to connect up to six displays simultaneously, revolutionizing multi-monitor setups for both gaming and productivity. The card's high shader count and memory bandwidth made it suitable for demanding applications including 3D rendering, video editing, and scientific computing. Its performance and feature set helped establish AMD (formerly ATI) as a serious competitor to NVIDIA in the high-end graphics market, pushing the industry forward in terms of visual fidelity and computational graphics capabilities.

## Notable For
- First GPU in the Radeon HD 5000 series to support DirectX 11
- Introduced Eyefinity technology for multi-display gaming and productivity
- Featured 2.154 billion transistors, making it one of the most complex GPUs of its time
- Supported hardware tessellation for more detailed 3D graphics
- Achieved high performance in both gaming and professional applications

## Body
### Architecture and Design
The Radeon HD 5870 is built on ATI's TeraScale 1 microarchitecture, manufactured using a 40 nm process. This architecture introduced significant improvements in parallel processing and power efficiency compared to previous generations. The GPU contains 2.154 billion transistors packed into a 334 mm² die, representing a substantial increase in complexity and capability.

### Performance Specifications
Operating at a base clock frequency of 850 MHz, the Radeon HD 5870 delivers substantial computational power through its 1600 shading units. These stream processors handle complex calculations for graphics rendering and general-purpose computing tasks. The card includes 80 texture mapping units that process texture coordinates and apply textures to 3D models, contributing to realistic surface details in games and applications.

### Memory and Interface
The graphics card utilizes GDDR5 memory, which provides higher bandwidth compared to previous GDDR3 technology. This allows for faster data transfer between the GPU and memory, improving performance in memory-intensive applications. The card connects to systems via a PCI Express interface, ensuring compatibility with modern desktop motherboards.

### Software and Feature Support
The Radeon HD 5870 supports multiple instruction sets including OpenGL 4.4 for advanced graphics rendering, OpenCL 1.2 for parallel computing, and DirectX 11 for gaming. These APIs enable developers to create more sophisticated visual effects, realistic physics simulations, and efficient parallel processing algorithms. The card's feature set made it suitable for both entertainment and professional applications requiring high-performance graphics processing.

### Thermal and Power Considerations
With a Thermal Design Power of 188 watts, the Radeon HD 5870 requires adequate cooling and power delivery. This TDP rating indicates the maximum amount of heat the cooling system must dissipate under typical operating conditions. The card's power consumption reflects its high performance capabilities and the energy requirements of its advanced processing units.

## References

1. Source