Comparison of GeForce 840M and Radeon R8 M365DX [S]ave
| Attribute |  GeForce 840M × |  Radeon R8 M365DX × |
|---|---|---|
| GPU | ||
| Release year (year) | 2014 | 2015 |
| GPU brand | Nvidia | AMD |
| GPU name | GM108 | Meso |
| Market | Laptop | - |
| Clock speed (MHz) | 1,029 | 900 |
| Turbo clock speed (MHz) | 1,124 | 1,125 |
| Is dual GPU | - | - |
| Model | GeForce 840M | Radeon R8 M365DX |
| Memory | ||
| Memory (MB) | 1,024 | - |
| Memory bandwidth (GB/s) | 16 | - |
| Memory bus (bit) | 64 | - |
| Memory type | DDR3 | - |
| Memory clock speed (MHz) | 1,001 | - |
| Effective memory clock speed (MHz) | 2,002 | - |
| Noise and power | ||
| TDP (W) | 33 | - |
| Raw performance | ||
| Pixel rate (GPixel/s) | 8.23 | 7.2 |
| Render output processors | 8 | 8 |
| Texture mapping units | 16 | 24 |
| Shading units | 384 | 384 |
| Floating-point performance (GFLOPS) | 790 | 691 |
| Compute units | - | 6 |
| Texture rate (GTexel/s) | 16.46 | 21.6 |
| Benchmarks | ||
| Metro: Last Light | - | 9.3 |
| Crysis 3 | - | 4.9 |
| Bioshock Infinite | - | 13.5 |
| Battlefield 4 | 11.2 | 9.55 |
| Face detection (mPixels/s) | 22.54 | - |
| T-Rex (GFXBench 3.0) | 3359.62 | 2017.62 |
| Manhattan (GFXBench 3.0) | 1855.62 | 1370.17 |
| Bitcoin mining (mHash/s) | 94.68 | - |
| Sky Diver Factor | 120.22 | - |
| Thief | 9.1 | 6.7 |
| Fire Strike Factor | 12.59 | - |
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