Comparison of GeForce GT 420 and Radeon HD 7450A [S]ave
| Attribute |  GeForce GT 420 × |  Radeon HD 7450A × |
|---|---|---|
| GPU | ||
| Release year (year) | 2010 | 2012 |
| GPU brand | Nvidia | AMD |
| GPU name | GF108 | Caicos |
| Market | Desktop | Laptop |
| Clock speed (MHz) | 700 | 625 |
| Is dual GPU | - | - |
| Model | GeForce GT 420 | Radeon HD 7450A |
| Memory | ||
| Memory (MB) | 1,048 | 512 |
| Memory bandwidth (GB/s) | 28.8 | 12.8 |
| Memory bus (bit) | 128 | 64 |
| Memory type | DDR3 | GDDR3 |
| Memory clock speed (MHz) | 900 | 800 |
| Effective memory clock speed (MHz) | 1,800 | 1,600 |
| Noise and power | ||
| TDP (W) | 50 | 25 |
| Raw performance | ||
| Pixel rate (GPixel/s) | 1.4 | 2.5 |
| Render output processors | 4 | 4 |
| Texture mapping units | 4 | 8 |
| Shading units | 48 | 160 |
| Floating-point performance (GFLOPS) | 134 | 200 |
| Compute units | - | 2 |
| Texture rate (GTexel/s) | 2.8 | 5 |
| Benchmarks | ||
| Particle simulation (mInteraction/s) | 26.67 | - |
| PassMark | - | 288 |
| PassMark Direct Compute | - | 165 |
| Cloud Gate Factor | 7.08 | - |
| Face detection (mPixels/s) | 3.19 | - |
| T-Rex (GFXBench 3.0) | 1648.79 | 1600.51 |
| Manhattan (GFXBench 3.0) | 1181.01 | 907.55 |
| Sky Diver Factor | 40.32 | - |
| Fire Strike Factor | 4.17 | - |
| Ocean surface simulation (frames/s) | 104.11 | - |
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