Hardware Spec Index

Brontix FN-3974 Ultra 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3974-ULTRA · Released 2026 · Updated 2026-10-21

Key facts

Benchmark index1,221 (Case Fans scale)
Category rank#28,448
Street price$39
Power4 W
Performance per dollar31.31
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3974 Ultra
Size140 × 140 × 25 mm
Speed400–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3974 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/9906910 (accessed 2026-10-21).