Comparison of Radeon HD 3870 X2 and Mobility Radeon HD 4670 [S]ave
| Attribute |  Radeon HD 3870 X2 × |  Mobility Radeon HD 4670 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2008 | 2009 |
| GPU brand | ATI | ATI |
| GPU name | R680 | M96 |
| Market | Desktop | Laptop |
| Clock speed (MHz) | 825 | 675 |
| Is dual GPU | + | - |
| Model | Radeon HD 3870 X2 | Mobility Radeon HD 4670 |
| Memory | ||
| Memory (MB) | 1,024 | 512 |
| Memory bandwidth (GB/s) | 115.3 | 25.6 |
| Memory bus (bit) | 512 | 128 |
| Memory type | GDDR3 | GDDR3 |
| Memory clock speed (MHz) | 901 | 800 |
| Effective memory clock speed (MHz) | 1,802 | 1,600 |
| Noise and power | ||
| TDP (W) | 165 | 35 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 26.4 | 5.4 |
| Render output processors | 32 | 8 |
| Texture mapping units | 32 | 32 |
| Shading units | 640 | 320 |
| Floating-point performance (GFLOPS) | 1,056 | 432 |
| Compute units | 8 | 4 |
| Texture rate (GTexel/s) | 26.4 | 21.6 |
| Benchmarks | ||
| PassMark | 872 | 465 |
| Cloud Gate Factor | 10.96 | - |
| T-Rex (GFXBench 3.0) | 3336.96 | 3212.28 |
Help · Contact us · Disclaimer · Contributors · Developers · Donate