AMD Radeon HD 6850 X2 vs AMD Radeon HD 6870 X2
What is the difference between AMD Radeon HD 6850 X2 and AMD Radeon HD 6870 X2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Barts | GPU Name | Barts |
| Barts PRO (215-0798006) | Model number | Barts XT (215-0798000) |
| TeraScale 2 | Architecture | TeraScale 2 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 40 nm |
| 1,700 million | Transistors | 1,700 million |
| 255 mm² | Die Size | 255 mm² |
Graphics Card
| Sep 19th, 2011 | Release Date | Jul 8th, 2011 |
| Northern Islands (HD 6800) | Family | Northern Islands (HD 6800) |
| End-of-life | Production | End-of-life |
| Evergreen | Predecessor | Evergreen |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB x2 | Memory Size | 1024 MB x2 |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit x2 | Memory Bus | 256 bit x2 |
Clock Speeds
| 1050 MHz 4.2 Gbps effective | Memory Clock | 1050 MHz 4.2 Gbps effective |
| 800 MHz | GPU Clock | 900 MHz |
Render Config
| 48 x2 | TMUs | 56 x2 |
| 32 x2 | ROPs | 32 x2 |
Board Design
| 254 W | Thermal design power (TDP) | 300 W |
| 600 W | Suggested PSU | 700 W |
| 2x DVI 1x HDMI 1x DisplayPort | Display Connectors | 2x DVI 1x HDMI 2x mini-DisplayPort |
API support
| 11.2 (11_0) | DirectX | 11.2 (11_0) |
| 4.4 | OpenGL | 4.4 |
| 1.2 | OpenCL | 1.2 |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 5.0 |