Fractal Design claims the Prisma models as its most efficient 140mm fans. According to the specs, they are supposed to achieve the highest airflow at a lower noise level than the Aspect 14s. However, this is physically impossible due to the constructional differences of the two fans. The title of the article has a bit of a pejorative tone and while the Prisma AL-14 PWM is a decent fan, it already has a superior from its own ranks.
Results: Vibration, Z-axis
Why is there a missing value sometimes? There may be more reasons. Usually it is because the fan could not be adjusted to the target noise level. Some have a higher minimum speed (or the speed is low, but the motor is too noisy) or it is a slower fan that will not reach the higher decibels. But the results in the graphs are also missing if the rotor is brushing against the nylon filter mesh. In that case, we evaluate this combination as incompatible. And zero in the graphs is naturally also in situations where we measure 0.00. This is a common occurrence at extremely low speeds with obstructions or within vibration measurements.
What are the main features of the Prisma AL-14 PWM fan by Fractal Design?
It’s hard to identify a single main feature – personally, I wouldn’t dare to do so because it really depends on your perspective. The Prisma AL-14 PWM is, in any case, a relatively efficient fan with ARGB elements. Of course, in terms of the airflow-to-noise ratio, it’s starting to show the limitations of its outdated rotor design – but it’s all about compromises. Yes, there are currently more attractive alternatives on the market, and even more promising fans are on the way – including from Fractal Design itself. These will also feature ARGB and come in a 140 mm format. Stay tuned. 🙂