ATI Mobility Radeon HD 3870 vs AMD Radeon HD 7640G IGP
What is the difference between ATI Mobility Radeon HD 3870 and AMD Radeon HD 7640G IGP. Find out which graphics card has better performance.
Graphics Processor (GPU)
| M88 | GPU Name | Devastator Lite |
| TeraScale | Architecture | TeraScale 3 |
| TSMC | Foundry | TSMC |
| 55 nm | Process Size | 32 nm |
| 666 million | Transistors | 1,303 million |
| 192 mm² | Die Size | 246 mm² |
Graphics Card
| Jun 4th, 2008 | Release Date | May 15th, 2012 |
| M8x (Mobility HD 3800) | Family | Trinity (HD 7000 Mobile) |
| End-of-life | Production | End-of-life |
| M7x | Predecessor | Sumo |
| PCIe 2.0 x16 | Bus Interface | IGP |
Memory
| 512 MB | Memory Size | System Shared |
| GDDR3 | Memory Type | System Shared |
| 256 bit | Memory Bus | System Shared |
| 54.40 GB/s | Bandwidth | System Dependent |
Performance
| 10.56 GPixel/s | Pixel fillrate | 5.240 GPixel/s |
| 10.56 GTexel/s | Texture fillrate | 10.48 GTexel/s |
| 422.4 GFLOPS | FP32 (float) performance | 335.4 GFLOPS |
Clock Speeds
| 850 MHz 1700 Mbps effective | Memory Clock | System Shared |
Render Config
| 320 | Shading Units | 256 |
| 16 | TMUs | 16 |
| 16 | ROPs | 8 |
| 4 | Compute Units | 4 |
Board Design
| 55 W | Thermal design power (TDP) | 35 W |
| No outputs | Display Connectors | No outputs |
API support
| 10.1 (10_1) | DirectX | 11.2 (11_0) |
| 3.3 | OpenGL | 4.4 |
| N/A | OpenCL | 1.2 |
| N/A | Vulkan | N/A |
| 4.1 | Shader Model | 5.0 |