Comparison of Radeon HD 3850 X2 and Mobility Radeon HD 3870 X2 [S]ave
| Attribute |  Radeon HD 3850 X2 × |  Mobility Radeon HD 3870 X2 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2008 | 2008 |
| GPU brand | ATI | ATI |
| GPU name | RV670 | M88 |
| Market | Desktop | Laptop |
| Clock speed (MHz) | 669 | 660 |
| Is dual GPU | + | + |
| Model | Radeon HD 3850 X2 | Mobility Radeon HD 3870 X2 |
| Memory | ||
| Memory (MB) | 1,024 | 1,024 |
| Memory bandwidth (GB/s) | 106 | 108.8 |
| Memory bus (bit) | 512 | 512 |
| Memory type | GDDR3 | GDDR3 |
| Memory clock speed (MHz) | 828 | 850 |
| Effective memory clock speed (MHz) | 1,656 | 1,700 |
| Noise and power | ||
| TDP (W) | 140 | 110 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 21.4 | 21.12 |
| Render output processors | 32 | 32 |
| Texture mapping units | 32 | 32 |
| Shading units | 640 | 640 |
| Floating-point performance (GFLOPS) | 856 | 845 |
| Compute units | 8 | 8 |
| Texture rate (GTexel/s) | 21.4 | 21.12 |
| Benchmarks | ||
| PassMark | 792 | 563 |
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