Comparison of AMD FirePro W4000 and Radeon HD 6990M [S]ave
| Attribute |  Radeon HD 6990M × |  AMD FirePro W4000 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2011 | 2012 |
| GPU brand | AMD | AMD |
| GPU name | Blackcomb | Pitcairn |
| Market | Laptop | Desktop |
| Clock speed (MHz) | 715 | 825 |
| Is dual GPU | - | - |
| Model | Radeon HD 6990M | AMD FirePro W4000 |
| Memory | ||
| Memory (MB) | 2,048 | 2,048 |
| Memory bandwidth (GB/s) | 115.2 | 102.4 |
| Memory bus (bit) | 256 | 256 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 900 | 800 |
| Effective memory clock speed (MHz) | 3,600 | 3,200 |
| Noise and power | ||
| TDP (W) | 100 | 75 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 22.88 | 26.4 |
| Render output processors | 32 | 32 |
| Texture mapping units | 56 | 48 |
| Shading units | 1,120 | 768 |
| Floating-point performance (GFLOPS) | 1,602 | 1,267 |
| Compute units | 14 | 12 |
| Texture rate (GTexel/s) | 40 | 39.6 |
| Benchmarks | ||
| Battlefield 3 | 21.9 | - |
| Dirt3 | 39.4 | - |
| Crysis 2 | 35 | - |
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