Hardware Spec Index

Zephyra FN-3631 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3631-PRIME · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index589 (Case Fans scale)
Category rank#11,716
Street price$19
Power3 W
Performance per dollar31.00
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3631 Prime
Size120 × 120 × 25 mm
Speed500–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3631 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/37521983 (accessed 2026-10-23).