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Noctua

Q: How many cfm, or cubic feet per minute?

Google says "120,2 cubic meters per hour to cubic feet per minute = 70,747049 (cubic feet) per minute." I can type that in with the best of them.

Q: Is this an airflow fan or a static pressure fan?

The fan blades are shaped for static pressure. https://www.amazon.com/dp/B00KF7PPY4/ref=psdc_11036291_t1_B07CG2PGY6 are shaped for airflow. These are static optimized fans

Q: If I want to only use two wires on this fan for max speed, which leads should I use green / black ?

Here's some info that might help you, and should answer that question giving you some confidence... that extra pin on a 4 pin fan is the digital speed control -- this is why the fan goes at max speed if plugged into a 3 pin connector (letting the 4th pin just hang over the side), rather than a a 4 pin connector. Pin number 3 is what tells your motherboard the rotations per minute (RPM) of the fan. So, all that you are left with is the first two pins. The first pin is ground (almost always black) and the second pin is the power (it's 12 volts, but you can get 5 volts from the a custom connector from the power supply instead of the 4 pin motherboard connector if you want to have a slower fan). Here's a chart: For 4-Wire Pulse Width Modulation (PWM) Controlled Fans Pin Name Description Wire color(usual) 1 GND Ground black 2 +12V Fan Power yellow 3 SIGNAL Fan RPM green 4 PWM Digital Control blue So to answer your question, yes it is possible to just use the first two pins (regardless of color, although the first one is almost always black, but the color of the second one is not always the same).

Q: Will the pwm control on this fan stop it completely even with power to +12v/gnd?

On my motherboard (ASUS X99-E WS), can't speak for any other motherboards, any percentage below 50% results in no movement, giving you only really adjustment between 50-100%. I found this somewhat frustrating, but I do prefer this to them never coming to a complete stop.

Product ID: 81734459

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Details

Product Dimensions
4.72"L x x
Brand
Noctua
Power Connector Type
4-Pin
Voltage
12 Volts
Wattage
1.08 watts
Cooling Method
Air

🌀1700 RPM max speed

📏120x120x25 mm size

🔇25.1 dB(A) ultra-quiet

Frequently Bought Together

Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey)

Noctua NF-P14s redux-1500 PWM, High Performance Cooling Fan, 4-Pin, 1500 RPM (140mm, Grey)

Cable Matters 2-Pack 3 Way 4 Pin PWM Fan Splitter Cable - 12 Inches / 30cm, 1x PWM-Controlled Fan with 2 Follower Fans, PC Fan Splitter 1 to 3 Converter, PC-Fan Extension Cable

Description

🌀 Stay cool, stay ahead — the silent powerhouse your rig deserves!

SMART PWM CONTROL - 4-pin PWM enables dynamic speed adjustment for perfect thermal balance.
COMPACT COMPATIBLE - Standard 120mm size fits seamlessly into any desktop setup.
PRECISION COOLING POWER - Optimized 1700 RPM delivers powerful airflow without the noise.
WHISPER QUIET OPERATION - Engineered for near-silent performance at just 25.1 dB(A).
AWARD WINNING RELIABILITY - Trusted by pros worldwide with >150,000 hours MTTF and 100+ accolades.

The Noctua NF-P12 redux-1700 PWM is a high-performance 120mm cooling fan featuring a 1700 RPM max speed, ultra-quiet 25.1 dB(A) operation, and 4-pin PWM for smart motherboard speed control. Its pressure-optimized blade design ensures superior airflow and static pressure, making it ideal for CPU coolers, radiators, and chassis ventilation. Backed by over 100 international awards and a proven track record of reliability with more than 150,000 hours MTTF, this fan combines premium Noctua quality with an attractive price point.

Specifications

Product Dimensions	4.72"L x 4.72"W x 0.98"H
Brand	Noctua
Power Connector Type	4-Pin
Voltage	12 Volts
Wattage	1.08 watts
Cooling Method	Air
Compatible Devices	Desktop
Noise Level	25.1 Decibels
Material	Fibre-glass reinforced PBT
Maximum Rotational Speed	1700 RPM
Air Flow Capacity	120.2 Cubic Meters Per Hour
UPC	841501110368
Global Trade Identification Number	09010018100365
Manufacturer	Noctua
Number of Items	1
Model	NF-P12 redux-1700 PWM
Item Weight	4.4 ounces
Item model number	NF-P12 redux 1700 PWM
Is Discontinued By Manufacturer	No
Manufacturer Part Number	NF-P12 redux-1700 PWM
Safety Rating	Não aplicável

Have a Question? See What Others Asked

How many cfm, or cubic feet per minute?

Is this an airflow fan or a static pressure fan?

If I want to only use two wires on this fan for max speed, which leads should I use green / black ?

Will the pwm control on this fan stop it completely even with power to +12v/gnd?

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