Hardware Spec Index

Brontix FN-3921 SE 120mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3921-SE · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index1,098 (Case Fans scale)
Category rank#41,136
Street price$39
Power3 W
Performance per dollar28.15
Released2022

Specifications

BrandBrontix
ModelBrontix FN-3921 SE
Size120 × 120 × 25 mm
Speed400–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise36 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3921 SE 120mm PWM ARGB Case Fan”, https://vextor7.com/item/912420 (accessed 2026-10-24).