High performance 14cm fan with S-FLOW blades supplying 30% more airflow than a standard fan at the same speed. Supporting fully automatic PWM speed control, the VIPER-R uses custom design
PWM IC that integrates Soft Switching Commutation (SSC)
technology, provides smooth silent operation.

The Viper fan creates more focused airflow providing blind-spot cooling, which makes it an ideal solution for a case or heatsink fan. HDB (Hydro Dynamic) bearings extend fan life and further enhance noise reduction. Killer Viper yellow colour makes this fan distinctive and unique.

14cm fan blade on 12cm fitting makes it a ideal solution for those who wants more airflow to the heatsink.

Note: This fan measures 145mm but fits on normal 120mm Fan mount patterns!


  • 14cm fan blade on 12cm fan fitting
  • S-FLOW fan blade design delivers 30% higher airflow
  • PWM with SSC technology provides smooth silent operation
  • Hydro Dynamic Bearing extends fan life up to 50,000 hours
Air Flow: 109.55 CFM
Bearing Type: HDB (Hydro Dynamic Bearing)
Noise: 7-21.7 dB(A)
Speed: 600-1600 RPM
Voltage / Amperage: 12V
Air pressure: 2.91 mm-H2O
Dimensions: 145 mm x 145 mm x 25 mm
Connector: PWM-4pin

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Akasa VIPER R PWM Fan w/ Hydro Dynamic Bearings 120/140mm x 25mm

  • Brand: Akasa
  • Product Code: AK-FN073
  • Availability: In Stock
  • $14.95