Hardware Spec Index

Brontix FN-3921 SE 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3921-SE · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index1,053 (Case Fans scale)
Category rank#48,205
Street price$39
Power3 W
Performance per dollar27.00
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3921 SE
Size140 × 140 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3921 SE 140mm PWM ARGB Case Fan”, https://vextor7.com/item/95549022 (accessed 2026-10-21).