Product Comparison: Noctua NF-R8 redux-1800 PWM vs Noctua NF-A8 PWM

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General Specifications
NF-R8 redux-1800 PWM
About the Product
The 1800rpm PWM version features Noctua’s proprietary NE-FD1 PWM IC for automatic speed control, which allows to strike a perfect balance between high cooling capacity and low noise operation in each given situation.
The PWM version sports Noctua’s custom designed NE-FD1 IC for fully automatic speed control via 4-pin fan headers and comes with a Low-Noise-Adaptor to reduce the maximum speed during PWM control from 2200 to 1750rpm.
Key Specs
Fan Bearing Technology
SSO Bearing
SSO2 Bearing
Max. Airflow
31.37 CFM
32.66 CFM
1800 RPM
2200 RPM
What customers say about "Key Specs"
Noctua NF-R8 redux-1800 PWM High Performance Cooling Fan
  • Noctua fans have excellent reviews for quiet with good airflow.
  • They have great airflow and cooling capability for such a low noise footprint.
  • Classy looking and work perfectly, with good airflow.
  • Great airflow and insanely quiet.
  • Has a really good amount of airflow and is surprisingly quiet.
Noctua NF-A8 PWM Premium Quiet Fan
  • Good airflow. Extremely quiet, it has a slight wind noise but that's it.
  • These fans are whisper quiet and provide a great amount of airflow.
  • High quality, and great for a quiet-server build where airflow is still important.
  • Simply amazing airflow. Moves a ton of air and really keeps the important parts cool.
  • These move the air a lot and with their blade design coupled with the cushioned mounts, do it very quietly.
Size & Weight
3.15 in.
3.15 in.
3.15 in.
3.15 in.
0.98 in.
0.98 in.
5.1 oz.
5.29 oz.
Number of Coolers
Fan Size
80 mm
80 mm
Noise Level
17.1 dB
17.7 dB
Power Connector Type
Custom-designed PWM IC with SCD, Streamlined redux edition
Low-Noise Adapter, Flow Acceleration Channels, AAO frame, Integrated anti-vibration pads, Custom-designed PWM IC with SCD
What customers say about "Features"
Noctua NF-R8 redux-1800 PWM High Performance Cooling Fan
  • Quiet and effective airflow.
  • Quiet, powerful. Keep it working at 95% and is silent.
  • This is very quiet. At full speed it moves a reasonable amount of air very quietly.
  • These fans are whisper quiet, you really can only hear them run at 1300 RPM and beyond.
  • This is a high quality and quiet.
Noctua NF-A8 PWM Premium Quiet Fan
  • This fan is quiet, and the specifications are honest.
  • It runs relatively quiet for the expected amount of airflow.
  • Great fan, and very quiet.
  • They are both open, visible and super quiet. Highly recommended!
  • Mostly quiet operation. Construction feels solid.
Warranty / Certifications
Manufacturer Warranty
6 year(s)
6 year(s)
Other Information

Other reviews