Hardware Spec Index

Zephyra FN-3900 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3900-ULTRA · Released 2023 · Updated 2026-10-22

Key facts

Benchmark index670 (Case Fans scale)
Category rank#19,218
Street price$19
Power3 W
Performance per dollar35.26
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3900 Ultra
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise29 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3900 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/10054898 (accessed 2026-10-22).