Hardware Spec Index

Brontix FN-3990 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3990-PRO · Released 2026 · Updated 2026-10-24

Key facts

Benchmark index601 (Case Fans scale)
Category rank#14,877
Street price$19
Power3 W
Performance per dollar31.63
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3990 Pro
Size120 × 120 × 25 mm
Speed400–1,500 RPM (PWM)
Airflow51.0 CFM
Static pressure1.65 mmH₂O
Noise32 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3990 Pro 120mm PWM Case Fan”, https://vextor7.com/item/33033932 (accessed 2026-10-24).