Comparison of GeForce GT 640 Rebrand and Radeon HD 6930 [S]ave
| Attribute |  Radeon HD 6930 × |  GeForce GT 640 Rebrand × |
|---|---|---|
| GPU | ||
| Release year (year) | 2011 | 2012 |
| GPU brand | AMD | Nvidia |
| GPU name | Cayman CE | GF116 |
| Market | Desktop | Desktop |
| Clock speed (MHz) | 750 | 720 |
| Is dual GPU | - | - |
| Model | Radeon HD 6930 | GeForce GT 640 Rebrand |
| Memory | ||
| Memory (MB) | 1,024 | 1,536 |
| Memory bandwidth (GB/s) | 153.6 | 38.4 |
| Memory bus (bit) | 256 | 192 |
| Memory type | GDDR5 | DDR3 |
| Memory clock speed (MHz) | 1,200 | 800 |
| Effective memory clock speed (MHz) | 4,800 | 1,600 |
| Noise and power | ||
| TDP (W) | 186 | 75 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 24 | 4.32 |
| Render output processors | 32 | 24 |
| Texture mapping units | 80 | 24 |
| Shading units | 1,280 | 144 |
| Floating-point performance (GFLOPS) | 1,920 | 415 |
| Compute units | 20 | - |
| Texture rate (GTexel/s) | 60 | 17.28 |
| Benchmarks | ||
| 3DMark 11 Graphics | 4,880 | 2,310 |
| 3DMark Vantage Graphics | 19,070 | 9,030 |
| CLBenchmark Raytrace | 65,023 | 36,743 |
| 3DMark06 | 26,350 | 13,300 |
| Cloud Gate Factor | 16.03 | - |
| Sky Diver Factor | 213.14 | - |
| Fire Strike Factor | 26.32 | - |
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