Hardware Spec Index

Zephyra FN-3981 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3981-PRO · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index448 (Case Fans scale)
Category rank#9,880
Street price$19
Power4 W
Performance per dollar23.58
Released2020

Specifications

BrandZephyra
ModelZephyra FN-3981 Pro
Size140 × 140 × 25 mm
Speed200–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise34 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3981 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/6421162 (accessed 2026-10-19).