Hardware Spec Index

Brontix FN-3921 Edge 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3921-EDGE · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index607 (Case Fans scale)
Category rank#25,761
Street price$19
Power4 W
Performance per dollar31.95
Released2023

Specifications

BrandBrontix
ModelBrontix FN-3921 Edge
Size140 × 140 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3921 Edge 140mm PWM Case Fan”, https://vextor7.com/item/2178007 (accessed 2026-10-24).