Advertised Vs. Real Performance
This is probably the most crucial page, showing how accurate the data provided by the manufacturers/brands on their products is. Since nobody could verify these numbers so far, it was an open field for every brand to declare whatever it wanted, but this stops now. I should also note that I strictly follow the specific guidelines (ISO7779: 2018) for taking noise measurements in information technology and telecommunications equipment.
In the table below, anything in Red means bad news, while the Blue fonts are good!
| Performance Metric | Advertised Performance | Real Performance | Difference |
|---|---|---|---|
| Max Speed (RPM) | 2500 | 2595 | +3.8% |
| Max Input Current (A) | 0.2 | 0.21 | +5% |
| Max Power (W) | 2.4 | 2.53 | +5.42% |
| Qmax (CFM) | 76.7 | 72.76 | -5.14% |
| Pmax (mmAq) | 3.96 | 3.07 | -22.47% |
| Max Noise Level (dBA) | 31.2 | 36.2 | +5 dBA |
Only the maximum speed is higher than advertised. Power consumption is higher, and the same goes for the noise output. Regarding performance, airflow is not that far from the claimed one, but the difference is vast, close to 22.5% when it comes to static pressure. Lastly, I measured 5 decibels more at full speed, than what be quiet! claims.
Why would the white version have a higher noise normalizing RPM than the black version with the same aerodynamic profile? That is, the white version is significantly quieter than the black version?