Hardware Spec Index

Brontix FN-3991 Edge 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3991-EDGE · Released 2021 · Updated 2026-10-19

Key facts

Benchmark index848 (Case Fans scale)
Category rank#29,940
Street price$29
Power4 W
Performance per dollar29.24
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3991 Edge
Size140 × 140 × 25 mm
Speed500–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise22 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-3991 Edge 140mm PWM ARGB Case Fan”, https://vextor7.com/item/475500 (accessed 2026-10-19).