Hardware Spec Index

Brontix FN-3631 Prime 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3631-PRIME · Released 2019 · Updated 2026-10-25

Key facts

Benchmark index249 (Case Fans scale)
Category rank#32,943
Street price$9
Power3 W
Performance per dollar27.67
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3631 Prime
Size120 × 120 × 25 mm
Speed300–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3631 Prime 120mm PWM Case Fan”, https://vextor7.com/item/21914767 (accessed 2026-10-25).