ATI Mobility Radeon HD 3870 vs ATI Radeon HD 3830
What is the difference between ATI Mobility Radeon HD 3870 and ATI Radeon HD 3830. Find out which graphics card has better performance.
Graphics Processor (GPU)
| M88 | GPU Name | RV670 |
| TeraScale | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 55 nm | Process Size | 55 nm |
| 666 million | Transistors | 666 million |
| 192 mm² | Die Size | 192 mm² |
Graphics Card
| Jun 4th, 2008 | Release Date | Apr 1st, 2008 |
| M8x (Mobility HD 3800) | Family | Radeon R600 (HD 3800) |
| End-of-life | Production | End-of-life |
| M7x | Predecessor | Radeon R500 PCIe |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 512 MB | Memory Size | 256 MB |
| GDDR3 | Memory Type | GDDR3 |
| 256 bit | Memory Bus | 128 bit |
| 54.40 GB/s | Bandwidth | 26.50 GB/s |
Performance
| 10.56 GPixel/s | Pixel fillrate | 10.69 GPixel/s |
| 10.56 GTexel/s | Texture fillrate | 10.69 GTexel/s |
| 422.4 GFLOPS | FP32 (float) performance | 427.5 GFLOPS |
| 84.48 GFLOPS (1:5) | FP64 (double) performance | 85.50 GFLOPS (1:5) |
Clock Speeds
| 850 MHz 1700 Mbps effective | Memory Clock | 828 MHz 1656 Mbps effective |
| 660 MHz | GPU Clock | 668 MHz |
Render Config
| 320 | Shading Units | 320 |
| 16 | TMUs | 16 |
| 16 | ROPs | 16 |
| 4 | Compute Units | 4 |
| 256 KB | L2 Cache | 128 KB |
Board Design
| 55 W | Thermal design power (TDP) | 75 W |
| No outputs | Display Connectors | No outputs |
API support
| 10.1 (10_1) | DirectX | 10.1 (10_1) |
| 3.3 | OpenGL | 3.3 (full) 4.0 (partial) |
| N/A | OpenCL | N/A |
| N/A | Vulkan | N/A |
| 4.1 | Shader Model | 4.1 |