Comparison of Radeon HD 8950 and Radeon HD 8990 [S]ave
| Attribute |  Radeon HD 8990 × | Radeon HD 8950 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2013 | 2013 |
| GPU brand | AMD | AMD |
| GPU name | Aruba | Curaçao PRO |
| Market | Desktop | Desktop |
| Clock speed (MHz) | 1,050 | 900 |
| Is dual GPU | + | - |
| Model | Radeon HD 8990 | Radeon HD 8950 |
| Memory | ||
| Memory (MB) | 6,144 | 3,072 |
| Memory bandwidth (GB/s) | 576 | 240 |
| Memory bus (bit) | 768 | 384 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 1,500 | 1,250 |
| Effective memory clock speed (MHz) | 6,000 | 5,000 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 100.8 | 43.2 |
| Render output processors | 96 | 48 |
| Texture mapping units | 320 | 144 |
| Shading units | 5,120 | 2,304 |
| Floating-point performance (GFLOPS) | 10,752 | 4,147 |
| Compute units | 80 | 36 |
| Texture rate (GTexel/s) | 336 | 129.6 |
| Benchmarks | ||
| Particle simulation (mInteraction/s) | 566.58 | 321.98 |
| T-Rex (Compubench 1.5) (frames/s) | 8.54 | 3.33 |
| Video composition (frames/s) | 125.5 | 64.21 |
| PassMark | 4,750 | 3,120 |
| PassMark Direct Compute | 2,785 | 1,741 |
| Face detection (mPixels/s) | 44.48 | 40.31 |
| Bitcoin mining (mHash/s) | 470.24 | 181.51 |
| Ocean surface simulation (frames/s) | 1984.65 | 795.33 |
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