ATI Mobility Radeon HD 3870 X2 vs ATI Radeon HD 3850 X3
What is the difference between ATI Mobility Radeon HD 3870 X2 and ATI Radeon HD 3850 X3. 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
| Sep 1st, 2008 | Release Date | Never Released |
| 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 x2 | Memory Size | 512 MB x3 |
| GDDR3 | Memory Type | GDDR3 |
| 256 bit x2 | Memory Bus | 256 bit x3 |
Clock Speeds
| 850 MHz 1700 Mbps effective | Memory Clock | 850 MHz 1700 Mbps effective |
| 660 MHz | GPU Clock | 669 MHz |
Render Config
| 16 x2 | TMUs | 16 x3 |
| 16 x2 | ROPs | 16 x3 |
Board Design
| No outputs | Display Connectors | 4x DVI |
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 |