Comparison of Radeon HD 3870 X2 and Radeon HD 4850 [S]ave
| Attribute |  Radeon HD 4850 × |  Radeon HD 3870 X2 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2008 | 2008 |
| GPU brand | ATI | ATI |
| GPU name | RV770 | R680 |
| Market | Desktop | Desktop |
| Clock speed (MHz) | 625 | 825 |
| Is dual GPU | - | + |
| Model | Radeon HD 4850 | Radeon HD 3870 X2 |
| Memory | ||
| Memory (MB) | 512 | 1,024 |
| Memory bandwidth (GB/s) | 63.5 | 115.3 |
| Memory bus (bit) | 256 | 512 |
| Memory type | GDDR3 | GDDR3 |
| Memory clock speed (MHz) | 993 | 901 |
| Effective memory clock speed (MHz) | 1,986 | 1,802 |
| Noise and power | ||
| TDP (W) | 110 | 165 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 10 | 26.4 |
| Render output processors | 16 | 32 |
| Texture mapping units | 40 | 32 |
| Shading units | 800 | 640 |
| Floating-point performance (GFLOPS) | 1,000 | 1,056 |
| Compute units | 10 | 8 |
| Texture rate (GTexel/s) | 25 | 26.4 |
| Benchmarks | ||
| FarCry 3 | 51 | - |
| Battlefield 3 | 40 | - |
| PassMark | 1,028 | 872 |
| Cloud Gate Factor | 12.95 | 10.96 |
| Battlefield 4 | 35 | - |
| T-Rex (GFXBench 3.0) | 3349.68 | 3336.96 |
| Sky Diver Factor | 124.95 | - |
| Fire Strike Factor | 12.48 | - |
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