Hardware Spec Index

Brontix FN-3781 Prime 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3781-PRIME · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index1,242 (Case Fans scale)
Category rank#7,214
Street price$49
Power4 W
Performance per dollar25.35
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3781 Prime
Size120 × 120 × 25 mm
Speed300–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise23 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3781 Prime 120mm PWM ARGB Case Fan”, https://vextor7.com/item/16596109 (accessed 2026-10-26).