The Fractal Design Dynamic X2 series are true all-purpose fans, offering excellent airflow and outstanding 100,000-hour life expectancy thanks to the new LLS (Long Life Sleeve) bearing.Added PWM support offers precise fan control via a wide speed adjustment range of 500 to 2,000 RPM allowing users to select their ideal mix of silent operation and maximum airflow.The customized design of the Dynamic X2 results in a beautiful fan that helps to keep your system cool, yet quiet. Designed together with Fractal Design's high-end Venturi Series, the Dynamic X2 incorporates aerodynamic elements of airplane wing designs for significant noise reduction.Available in multiple colors including black, white, and the classic Fractal Design white-on-black combination, the Dynamic X2 series are the perfect choice for those seeking an expertly balanced fan with exceptional dependability.- High-grade LLS bearing with 100,000-hour MTBF delivers long-lasting dependability- PWM support offers a wide 500 to 2,000 RPM speed adjustment range for silent operation under lighter loads and maximum airflow during more demanding activity. (120 mm versions)- Counter-balanced magnet reduces axial tension on the bearing, resulting in less wear over time- Optimized fan geometry balances airflow with extra emphasis on static pressure for great performance in any usage scenario- Aerodynamic stator with embedded wiring helps reduce noise and unwanted turbulence- Stator struts sit on a wide angle to the trailing edge of the blades, resulting in a lower noise level and smoother noise profile- Strategically placed notches near the fan hub on the trailing edge of the blades help to eliminate the humming noise produced when the blades pass stator struts- “Trip wire” technology introduces a micro-turbulent layer that helps to combat elements that negatively affect performance, providing an overall more efficient and quiet fan environment- Customized design contributes to a cool running and beautiful looking build- Available in 120mm and 140mm sizes and multiple colors including black, white or the signature Fractal Design white-on-black combination