Hardware Spec Index

Zephyra FN-3631 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3631-ULTRA · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index377 (Case Fans scale)
Category rank#36,838
Street price$9
Power4 W
Performance per dollar41.89
Released2026

Specifications

BrandZephyra
ModelZephyra FN-3631 Ultra
Size140 × 140 × 25 mm
Speed300–2,700 RPM (PWM)
Airflow129.6 CFM
Static pressure2.56 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3631 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/54777607 (accessed 2026-10-25).