InWin Neptune DN140 PRO Fan Review

The InWin Neptune DN140 pro features a specialized aerodynamic blade design to offer high performance and low noise output. InWin states that this fan has a strong pressure-to-airflow P-Q curve, meaning that it is ideal for use in either chassis, where high airflow is desired, or cooling solutions, where high static pressure is required. 

The InWin Neptune DN140 pro is a high-end (aka expensive) 140mm fan, which, according to its maker, it offers high airflow and static pressure, making it ideal for use in chassis and cooling solutions. On the product’s official page, InWin mentions that this fan is balanced optimally for optimal stability, which leads to minimized vibrations; hence, noise output is kept at the lowest possible levels. Moreover, the molded, on the frame, fan blades restrict air leakage, increasing airflow while helping to reduce noise output.

The three-phase fan’s motor drives a fluid dynamic bearing with a high lifetime if you don’t operate it for long hours at high temperatures (>40℃). FDB fans are, in general, less noisy than the ones with double ball bearings. DBB fans are usually preferred for operation in harsh environments, where noise output is not the priority.


Cybenetics Fans Database


Official Technical Specifications:
  • Model:  Neptune DN140 PRO
  • Model Number: IW-FN-DN140PRO-1PK
  • Material: PBT, Silicon
  • Connector: 4-pin PWM
  • Fan Speed PWM: 900 – 1800 RPM
  • Fan Airflow: 43.74 – 91.66 CFM
  • Static Pressure: 0.67 – 2.95 mm-H2O
  • Fan Noise Level: 24 dBA (Max)
  • Fan Bearing Type: Fluid Dynamic Bearing
  • Bearing durability: >60,000 hrs (no temperature information)
  • Fan Rated Voltage: 12 VDC
  • Fan Rated Current: 0.16A
  • Fan Rated Wattage: 1.92W
  • Fan Weight: 297 gr
  • Dimensions (W x H x D): 140 x 140 x 25mm
  • Daisy-Chain Capable: Yes
  • Cable length: 150mm (+500mm extension)
  • Price (excluding VAT): $30
  • Warranty: 6-years
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