Hardware Spec Index

Brontix FN-3931 Pro 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3931-PRO · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index1,176 (Case Fans scale)
Category rank#45,100
Street price$39
Power3 W
Performance per dollar30.15
Released2022

Specifications

BrandBrontix
ModelBrontix FN-3931 Pro
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise35 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3931 Pro 120mm PWM ARGB Case Fan”, https://vextor7.com/item/3928240 (accessed 2026-10-20).