Hardware Spec Index

Brontix FN-3988 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3988-ULTRA · Released 2024 · Updated 2026-10-24

Key facts

Benchmark index306 (Case Fans scale)
Category rank#29,692
Street price$9
Power3 W
Performance per dollar34.00
Released2024

Specifications

BrandBrontix
ModelBrontix FN-3988 Ultra
Size140 × 140 × 25 mm
Speed300–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise36 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3988 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/41363939 (accessed 2026-10-24).