The first ID-Cooling fan in our database, and it immediately features one unconventional element—the blade ring is positioned differently than usual. Its placement bellow the blade tips is typical of high-speed fans, and the AT-120-K model indeed spins at very high speeds. Despite that, it can also be significantly slowed down while maintaining attractive cooling efficiency even at lower noise levels. And all of this comes at an attractive price point.
Explanatory note: To assess how accurately manufacturers report their specifications, we compute a “truth coefficient.” This is the ratio between our measured data and the manufacturer-stated values. A coefficient of ‘1.00’ indicates that the declared parameters match our test results, affirming accurate and honest specification reporting. The further the value deviates from 1.00, the more the declared specs diverge from reality. A coefficient greater than 1.00 means real-world performance exceeds advertised figures, while values below 1.00 (e.g., 0.80) indicate underperformance—by 20% in this example. If the value is missing from the graph, it’s due to the manufacturer not providing the corresponding airflow or static pressure specification.
