Hardware Spec Index

Zephyra FN-4251 Pro 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4251-PRO · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index431 (Case Fans scale)
Category rank#20,988
Street price$19
Power3 W
Performance per dollar22.68
Released2019

Specifications

BrandZephyra
ModelZephyra FN-4251 Pro
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4251 Pro 120mm PWM Case Fan”, https://vextor7.com/item/4521944 (accessed 2026-10-25).