Hardware Spec Index

Zephyra FN-4391 Prime 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN4391-PRIME · Released 2020 · Updated 2026-10-21

Key facts

Benchmark index820 (Case Fans scale)
Category rank#17,675
Street price$29
Power4 W
Performance per dollar28.28
Released2020

Specifications

BrandZephyra
ModelZephyra FN-4391 Prime
Size120 × 120 × 25 mm
Speed200–3,000 RPM (PWM)
Airflow102.0 CFM
Static pressure3.30 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-4391 Prime 120mm PWM Case Fan”, https://vextor7.com/item/6587767 (accessed 2026-10-21).