Comparison of GeForce GTX 680M and Radeon R9 M390X [S]ave
| Attribute |  Radeon R9 M390X × |  GeForce GTX 680M × |
|---|---|---|
| GPU | ||
| Release year (year) | 2015 | 2012 |
| GPU brand | AMD | Nvidia |
| GPU name | Amethyst | GK104 |
| Market | Laptop | Laptop |
| Clock speed (MHz) | 723 | 719 |
| Turbo clock speed (MHz) | 950 | 719 |
| Is dual GPU | - | - |
| Model | Radeon R9 M390X | GeForce GTX 680M |
| Memory | ||
| Memory (MB) | 4,096 | 4,096 |
| Memory bandwidth (GB/s) | 160 | 115.2 |
| Memory bus (bit) | 256 | 256 |
| Memory type | GDDR5 | GDDR5 |
| Memory clock speed (MHz) | 1,250 | 900 |
| Effective memory clock speed (MHz) | 5,000 | 3,600 |
| Noise and power | ||
| TDP (W) | 100 | 100 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 23.14 | 20.13 |
| Render output processors | 32 | 32 |
| Texture mapping units | 128 | 112 |
| Shading units | 2,048 | 1,344 |
| Floating-point performance (GFLOPS) | 2,961 | 1,933 |
| Compute units | 32 | - |
| Texture rate (GTexel/s) | 92.5 | 80.5 |
| Benchmarks | ||
| Cloud Gate Factor | 23.65 | - |
| Battlefield 4 | 63.65 | 31.1 |
| Face detection (mPixels/s) | 44.39 | 28.08 |
| T-Rex (GFXBench 3.0) | 3356.44 | 3356.7 |
| Manhattan (GFXBench 3.0) | 3384.91 | 3699.4 |
| Bitcoin mining (mHash/s) | 241.5 | 99.75 |
| Sky Diver Factor | 317.44 | 287.29 |
| Thief | 35 | 31.3 |
| Fire Strike Factor | - | 40.62 |
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