Comparison of Radeon HD 7870 XT and GeForce GTX 870M [S]ave
| Attribute |  Radeon HD 7870 XT × |  GeForce GTX 870M × |
|---|---|---|
| GPU | ||
| Release year (year) | 2012 | 2014 |
| GPU brand | AMD | Nvidia |
| GPU name | Tahiti LE | GK104 |
| Market | Desktop | Laptop |
| Clock speed (MHz) | 925 | 941 |
| Turbo clock speed (MHz) | 975 | 967 |
| Is dual GPU | - | - |
| Model | Radeon HD 7870 XT | GeForce GTX 870M |
| Memory | ||
| Memory (MB) | 2,048 | 3,072 |
| Memory bandwidth (GB/s) | 192 | 120 |
| Memory bus (bit) | 256 | 192 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 1,500 | 1,250 |
| Effective memory clock speed (MHz) | 6,000 | 5,000 |
| Noise and power | ||
| TDP (W) | 185 | 100 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 31.2 | 26.35 |
| Render output processors | 32 | 24 |
| Texture mapping units | 96 | 112 |
| Shading units | 1,536 | 1,344 |
| Floating-point performance (GFLOPS) | 2,995 | 2,529 |
| Compute units | 24 | - |
| Texture rate (GTexel/s) | 93.6 | 105.4 |
| Benchmarks | ||
| Metro: Last Light | 79.5 | - |
| Battlefield 3 | 72 | - |
| Battlefield 4 | - | 36.6 |
| Face detection (mPixels/s) | 65.4 | 34.84 |
| T-Rex (GFXBench 3.0) | 3350.68 | 3360.2 |
| Manhattan (GFXBench 3.0) | 3705.76 | 3717.8 |
| Bitcoin mining (mHash/s) | 345.79 | 81.75 |
| Sky Diver Factor | 314 | 295.59 |
| Thief | - | 31.9 |
| Fire Strike Factor | 47.56 | 35.66 |
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