Hardware Spec Index

Zephyra FN-5781 Prime 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN5781-PRIME · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index459 (Case Fans scale)
Category rank#13,082
Street price$19
Power4 W
Performance per dollar24.16
Released2021

Specifications

BrandZephyra
ModelZephyra FN-5781 Prime
Size140 × 140 × 25 mm
Speed300–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise36 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-5781 Prime 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/10756194 (accessed 2026-10-23).