Comparison of GeForce 820A and GeForce 800M [S]ave
| Attribute |  GeForce 820A × | GeForce 800M × |
|---|---|---|
| GPU | ||
| Release year (year) | 2014 | 2014 |
| GPU brand | Nvidia | Nvidia |
| GPU name | GF117 | GF117 |
| Market | Laptop | Laptop |
| Clock speed (MHz) | 775 | 738 |
| Is dual GPU | - | - |
| Model | GeForce 820A | GeForce 800M |
| Memory | ||
| Memory (MB) | 1,024 | 1,024 |
| Memory bandwidth (GB/s) | 14.4 | 14.4 |
| Memory bus (bit) | 64 | 64 |
| Memory type | DDR3 | DDR3 |
| Memory clock speed (MHz) | 900 | 900 |
| Effective memory clock speed (MHz) | 1,800 | 1,800 |
| Noise and power | ||
| TDP (W) | 15 | 15 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 3.1 | 1.48 |
| Render output processors | 8 | 8 |
| Texture mapping units | 16 | 8 |
| Shading units | 96 | 48 |
| Floating-point performance (GFLOPS) | 298 | 142 |
| Texture rate (GTexel/s) | 12.4 | 5.9 |
| Benchmarks | ||
| Particle simulation (mInteraction/s) | - | 31.67 |
| Video composition (frames/s) | - | 7.25 |
| PassMark | 689 | 573 |
| Face detection (mPixels/s) | - | 4.91 |
| T-Rex (GFXBench 3.0) | 1705.82 | 1601.66 |
| Manhattan (GFXBench 3.0) | 1716.7 | 1123.28 |
| Bitcoin mining (mHash/s) | - | 15.22 |
| Ocean surface simulation (frames/s) | - | 109.13 |
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