Comparison of GeForce 920M and GeForce GT 645M [S]ave
| Attribute |  GeForce 920M × |  GeForce GT 645M × |
|---|---|---|
| GPU | ||
| Release year (year) | 2015 | 2012 |
| Reference card | Nvidia GeForce 920M 775 MHz 1 GB | - |
| GPU brand | Nvidia | Nvidia |
| GPU name | GK208 | GK107 |
| Market | Laptop | Laptop |
| Clock speed (MHz) | 954 | 709 |
| Is dual GPU | - | - |
| Model | GeForce 920M | GeForce GT 645M |
| Memory | ||
| Memory (MB) | 2,048 | 2,048 |
| Memory bandwidth (GB/s) | 14.4 | 28.8 |
| Memory bus (bit) | 64 | 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) | 33 | 32 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 7.63 | 5.67 |
| Render output processors | 16 | 16 |
| Texture mapping units | 32 | 32 |
| Shading units | 384 | 384 |
| Floating-point performance (GFLOPS) | 733 | 544 |
| Texture rate (GTexel/s) | 30.53 | 22.69 |
| Benchmarks | ||
| Crysis 3 | - | 7 |
| Bioshock Infinite | - | 14.3 |
| Battlefield 4 | 9.6 | - |
| Face detection (mPixels/s) | 8.36 | 8.49 |
| T-Rex (GFXBench 3.0) | 3358.92 | 1859.4 |
| Manhattan (GFXBench 3.0) | 3685.69 | 2708.22 |
| Bitcoin mining (mHash/s) | 40.41 | 19.12 |
| Sky Diver Factor | 102.8 | 118.77 |
| Thief | 5.95 | - |
| Fire Strike Factor | 10.41 | 14.91 |
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