Hardware Spec Index

Zephyra FN-3631 Prime 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3631-PRIME · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index799 (Case Fans scale)
Category rank#11,836
Street price$19
Power3 W
Performance per dollar42.05
Released2023

Specifications

BrandZephyra
ModelZephyra FN-3631 Prime
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Zephyra FN-3631 Prime 120mm PWM Case Fan”, https://vextor7.com/item/52321302 (accessed 2026-10-25).