Neptune DN120 PRO

Cool Like Neptune

The Neptune DN PRO fans revolutionize the industry’s thermal approach by integrating the specialized aerodynamic blade design. These fans balance cooling performance and acoustic suppression. Get ready to experience pro grade cooling!

Bested the Tested

The Neptune fans underwent rigorous testing, fortifying a strong pressure-to-airflow P-Q curve. The critical middle section indicates that the Neptune fans possess high static pressure and airflow that outperforms the competition.

True Air Benders

Besides enhancing speed, the Neptune series creates a more balanced performance, which includes reducing noise. Turbulence, resonance, and pitch from air dispersal were all taken into consideration. InWin dissected the fan's anatomy to produce these silent high static-pressure fans.

InWin’s Semi-Anechoic Chamber’s background noise level is at 17 dB(A). The sound test distance between the fan and the microphone is 1 meter.

Aerodynamic Aesthetics

Experience quiet cooling and efficient airflow with InWin’s signature Turbine Blade design. Molding the fan blades into the frame creates a more concentrated airflow, preventing air leakage and irritating noise pollution.

Neptune DN PRO Fan
Without airflow leakage
Regular Fan
Without airflow leakage
Neptune DN PRO Fan
Airflow concentrated
Regular Fan
Airflow dispersed

Neptune’s fan blades are angled slightly to ensure the airflow is channeled in a more focused stream. This tactical design allows the static pressure to increase.

The Neptune DN PRO fans operate with optimal stability and minimal vibrations. The fans accomplish this after countless dynamic balancing tests and multiple manual tunings.

Remarkable Ingenuity

Unleash the full power of the DN PRO with its three-phase, six-pole motor. High torque provides energy efficiency.

Thoroughly covered with a metal magnetic shield, the motor is blocked from electromagnetic wave disruptions to host a smooth operation.

From the motor rotating, fluid automatically provides sufficient lubrication and stabilizes dynamic pressure. Meanwhile, the copper bearing shield provides balance and stability to keep high performance at a much longer lifespan.

The closed-loop controlled circuit can detect the motor speed and compare to the designated PWM. The self-correcting difference can be precisely minimized down to 1%.

User-Friendly Installation

Metallic precision screw threading is pre-applied for easy installation. Customized radiator screws are included.

Material Upgrade

Both fan and extension cables are sleeved with braided nylon for better overall protection and appearance.

DN120 PRO / DN140 PRO Cable Information
PWM Fan Cable
PWM Fan Extention Cable


Model Neptune DN120 PRO Neptune DN140 PRO
Quantity Included Single Pack
Model Number IW-FN-DN120PRO-1PK IW-FN-DN140PRO-1PK
Colors Black
Fan Size 120 x 120 x 25 mm 140 x 140 x 25 mm
Materials PBT, Silicon
Rated Voltage DC 12V
Rated Power 1.44W 1.92W
Rated Current 0.13A 0.16A
Speed Mode PWM 900 - 2200 +/- 10% RPM PWM 900 - 1800 +/- 10% RPM
Air Flow 24.15 - 60.56 CFM 43.74 - 91.66 CFM
Air Pressure 0.45 - 2.83 mm / H2O 0.67 - 2.95 mm / H2O
Connector (Fan to Fan) Non-Modular Cables
Connector to M/B 4-Pin (12V, PWM)
Noise Level 20.3 dB(A) (Normal) 24 dB(A) (Normal)
Bearing Type FDB
MTBF >60,000 hrs.
Net Weight 251 g / 0.55 lbs 297 g / 0.65 lbs
Gross Weight 441 g / 0.97 lbs 516 g / 1.14 lbs
Package Dimensions
(L x W x H)
212 x 37 x 157 mm
8.35 x 1.45 x 6.18"
232 x 37 x 177 mm
9.13 x 1.45 x 6.97"
Warranty 6 Years
* InWin's products comply with RoHS regulations.
* Specifications may vary based on different regions.



News / Reviews


Neptune Series is on InWin Official eStore Now!

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