Hardware Spec Index

Zephyra FN-3974 Prime 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3974-PRIME · Released 2022 · Updated 2026-10-19

Key facts

Benchmark index427 (Case Fans scale)
Category rank#10,685
Street price$19
Power4 W
Performance per dollar22.47
Released2022

Specifications

BrandZephyra
ModelZephyra FN-3974 Prime
Size140 × 140 × 25 mm
Speed300–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3974 Prime 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/4453530 (accessed 2026-10-19).