Fractal Design Expands On The Dynamic Fan Series

👤by Tim Harmer Comments 📅22.08.2016 17:19:13

Swedish cooling and enclosure specialists Fractal Design are this week introducing a new series of fans intended to succeed and surpass the older Dynamic Series, bring with them longer life spans and evolutionary improvements in noise and cooling performance. Dynamic X2 fans, available in 140mm and 120m sizes, feature a new bearing and aerodynamic blades inspired by low-turbulence aircraft wings to boost air flow and reduce noise.

On the surface Dynamic X2 Series fans are fairly standard 3-pin models with a peak rotational speed of 1200rpm (120mm) or 1000rpm (140mm). However Fractal have a few tricks up their sleeve.

The Dynamic X2 Series fan blade is similar to that of the premium Venturi-class fan, which makes a number of key changes to the classical design. Most clear are the 'teeth' on the blade leading edge near the fan centre, an innovation which reduces noise when the fan blade moves past the supporting struts. However even these struts have been tweaked to reduce turbulence as air moves past, with a knock-on improvement in performance.

By contrast, the new 'trip wire' feature on the rear side of the fan blade near the leading edge is almost counter-intuitive in its design. This feature introduces a new, larger turbulent zone ahead of where turbulence tends to appear along the trailing edge of the blade. The exact mechanics behind why this is an improvement is likely mired in fluid dynamics, but Fractal Design are obviously certain that it improves both air flow and noise.

Key Features

- High grade LLS bearing with class leading 100,000 hours MTBF
- Equipped with a counter-pull magnet that reduces the axial tension on the bearing
- Fan geometry optimized for a good balance between static pressure and maximum airflow, resulting in good performance in all usage scenarios
- Aerodynamically shaped stator struts including the wire strut. Helps reduce noise and unwanted turbulence
- Stator struts sit on a wide angle to the trailing edge of the blades which result in a lower noise level and smoother noise profile
- Strategically placed notches near the fan hub on the trailing edge of the blades further reducing the humming noise produced when the blades pass the stator struts
- A "trip wire" on the rear side of the blades near the leading edge. The trip wire introduces a larger turbulent boundary layer at an earlier stage, this delays the layer separation and improves both airflow and noise characteristics.

The Dynamic X2 series fan are available in two colours (white & black / all black) and 120mm/140mm sizes. Currently the 120mm model is priced at $12.99 / 13.99 and the 140mm model at $14.99 / 15.99, with availability beginning shortly. For more information visit

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