Hardware Spec Index

Zephyra FN-3940 Ultra 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3940-ULTRA · Released 2019 · Updated 2026-10-19

Key facts

Benchmark index506 (Case Fans scale)
Category rank#20,022
Street price$19
Power3 W
Performance per dollar26.63
Released2019

Specifications

BrandZephyra
ModelZephyra FN-3940 Ultra
Size120 × 120 × 25 mm
Speed500–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise31 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3940 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/460163 (accessed 2026-10-19).