AMD Radeon HD 7850M vs AMD Radeon HD 6870 X2
What is the difference between AMD Radeon HD 7850M and AMD Radeon HD 6870 X2. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Heathrow | GPU Name | Barts |
| Heathrow PRO | Model number | Barts XT (215-0798000) |
| GCN 1.0 | Architecture | TeraScale 2 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 40 nm |
| 1,500 million | Transistors | 1,700 million |
| 123 mm² | Die Size | 255 mm² |
Graphics Card
| Apr 24th, 2012 | Release Date | Jul 8th, 2011 |
| London (HD 7800M) | Family | Northern Islands (HD 6800) |
| End-of-life | Production | End-of-life |
| Vancouver | Predecessor | Evergreen |
| PCIe 3.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 1024 MB x2 |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit x2 |
Clock Speeds
| 1000 MHz 4 Gbps effective | Memory Clock | 1050 MHz 4.2 Gbps effective |
| 675 MHz | GPU Clock | 900 MHz |
Render Config
| 40 | TMUs | 56 x2 |
| 16 | ROPs | 32 x2 |
Board Design
| 40 W | Thermal design power (TDP) | 300 W |
| No outputs | Display Connectors | 2x DVI 1x HDMI 2x mini-DisplayPort |
API support
| 12 (11_1) | DirectX | 11.2 (11_0) |
| 4.6 | OpenGL | 4.4 |
| 1.2 | OpenCL | 1.2 |
| 1.2 | Vulkan | N/A |
| 5.1 | Shader Model | 5.0 |