Comparison of Radeon HD 7730M and GeForce GT 640M [S]ave
| Attribute |  Radeon HD 7730M × |  GeForce GT 640M × |
|---|---|---|
| GPU | ||
| Release year (year) | 2012 | 2012 |
| GPU brand | AMD | Nvidia |
| GPU name | Chelsea | GK107 |
| Market | Laptop | Laptop |
| Clock speed (MHz) | 575 | 625 |
| Turbo clock speed (MHz) | 675 | - |
| Is dual GPU | - | - |
| Model | Radeon HD 7730M | GeForce GT 640M |
| Memory | ||
| Memory (MB) | 2,048 | 2,048 |
| Memory bandwidth (GB/s) | 28.8 | 28.8 |
| Memory bus (bit) | 128 | 128 |
| Memory type | DDR3 | DDR3 |
| Memory clock speed (MHz) | 900 | 900 |
| Effective memory clock speed (MHz) | 1,800 | 1,800 |
| Noise and power | ||
| TDP (W) | 25 | 32 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 10.8 | 5 |
| Render output processors | 16 | 16 |
| Texture mapping units | 32 | 32 |
| Shading units | 512 | 384 |
| Floating-point performance (GFLOPS) | 691 | 480 |
| Compute units | 8 | - |
| Texture rate (GTexel/s) | 21.6 | 20 |
| Benchmarks | ||
| Battlefield 3 | 10 | - |
| Battlefield 4 | - | 9.9 |
| Face detection (mPixels/s) | 15.24 | 7.86 |
| T-Rex (GFXBench 3.0) | 3365.76 | 3339.75 |
| Manhattan (GFXBench 3.0) | 3517.84 | 3590.88 |
| Bitcoin mining (mHash/s) | 69.76 | 17.38 |
| Sky Diver Factor | 114.28 | 106.74 |
| Thief | - | 8.35 |
| Fire Strike Factor | 14.28 | 11.26 |
| Ocean surface simulation (frames/s) | 289.17 | - |
Help · Contact us · Disclaimer · Contributors · Developers · Donate