Comparison of Radeon HD 8870 and GeForce GTX 680 Mac [S]ave
| Attribute |  GeForce GTX 680 Mac × |  Radeon HD 8870 × |
|---|---|---|
| GPU | ||
| Release year (year) | 2013 | 2013 |
| Reference card | Nvidia GeForce GTX 680 Mac Edition 1 GHz 2 GB | - |
| GPU brand | Nvidia | AMD |
| GPU name | GK104 | Hainan XT |
| Market | Desktop | Desktop |
| Clock speed (MHz) | 1,006 | 925 |
| Turbo clock speed (MHz) | 1,058 | 975 |
| Is dual GPU | - | - |
| Model | GeForce GTX 680 Mac | Radeon HD 8870 |
| Memory | ||
| Memory (MB) | 2,048 | 2,048 |
| Memory bandwidth (GB/s) | 192.3 | 192 |
| Memory bus (bit) | 256 | 256 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 1,502 | 1,500 |
| Effective memory clock speed (MHz) | 6,008 | 6,000 |
| Noise and power | ||
| TDP (W) | 195 | 185 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 32.2 | 29.6 |
| SMX units | 8 | - |
| Render output processors | 32 | 32 |
| Texture mapping units | 128 | 128 |
| Shading units | 1,536 | 2,048 |
| Floating-point performance (GFLOPS) | 3,090 | 3,789 |
| Compute units | - | 32 |
| Texture rate (GTexel/s) | 128.8 | 118.4 |
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