Hardware Spec Index

Zephyra FN-3581 Core 140mm PWM Case Fan

Case Fans · Zephyra · SKU FN3581-CORE · Released 2025 · Updated 2026-10-26

Key facts

Benchmark index560 (Case Fans scale)
Category rank#16,838
Street price$19
Power3 W
Performance per dollar29.47
Released2025

Specifications

BrandZephyra
ModelZephyra FN-3581 Core
Size140 × 140 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow96.0 CFM
Static pressure1.90 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3581 Core 140mm PWM Case Fan”, https://vextor7.com/item/21539415 (accessed 2026-10-26).