Hardware Spec Index

Zephyra FN-3989 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3989-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index260 (Case Fans scale)
Category rank#7,551
Street price$9
Power3 W
Performance per dollar28.89
Released2019

Specifications

BrandZephyra
ModelZephyra FN-3989 Ultra
Size120 × 120 × 25 mm
Speed500–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise29 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3989 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/16767136 (accessed 2026-10-21).