Hardware Spec Index

Zephyra FN-5781 Pro 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN5781-PRO · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index553 (Case Fans scale)
Category rank#48,184
Street price$19
Power4 W
Performance per dollar29.11
Released2021

Specifications

BrandZephyra
ModelZephyra FN-5781 Pro
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-5781 Pro 140mm PWM Case Fan”, https://vextor7.com/item/6450877 (accessed 2026-10-21).