Hardware Spec Index

Brontix FN-3781 SE 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3781-SE · Released 2023 · Updated 2026-10-25

Key facts

Benchmark index944 (Case Fans scale)
Category rank#11,818
Street price$29
Power3 W
Performance per dollar32.55
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3781 SE
Size140 × 140 × 25 mm
Speed400–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise22 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-3781 SE 140mm PWM ARGB Case Fan”, https://vextor7.com/item/56589558 (accessed 2026-10-25).