AMD · 2009
AMD Mobility Radeon HD 4870 X2
The AMD Mobility Radeon HD 4870 X2 is a high-end dual-GPU graphics card for laptops, released in 2009.
The AMD Mobility Radeon HD 4870 X2 is a dual-GPU graphics card for laptops, released on January 9, 2009. It is based on the TeraScale architecture and uses two RV770 GPU chips fabricated on a 55 nm process. Each GPU features 800 shading units, for a total of 1600 shading units across the card. The core clock speed is 550 MHz. The card is equipped with 2 GB of GDDR5 memory on a 512-bit memory bus, providing a memory bandwidth of 179.2 GB/s. It supports DirectX 10.1 and OpenGL 3.3. The bus interface is PCIe ×16 2.0. Additional features include UVD2 for video decoding and PowerPlay 7.0 for power management. This card was designed for high-performance gaming laptops and workstations requiring dual-GPU capabilities.
Specifications
| Architecture unverified | TeraScale |
|---|---|
| GPU chip unverified | RV770 |
| Process node unverified | 55 nm |
| Shading units unverified | 1600 |
| Base clock unverified | 550 MHz |
| Memory size unverified | 2 GB |
| Memory type unverified | GDDR5 |
| Memory bus unverified | 512 bit |
| Memory bandwidth unverified | 179.2 GB/s |
| Bus interface unverified | PCIe ×16 2.0 |
| DirectX support unverified | 10.1 |
| OpenGL support unverified | 3.3 |
| Release date unverified | 2009-01-09 |
| Release year unverified | 2009 |
| Notes unverified | UVD2, PowerPlay 7.0Dual GPU solution |