Hardware Spec Index

Brontix FN-3998 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3998-ULTRA · Released 2024 · Updated 2026-10-19

Key facts

Benchmark index347 (Case Fans scale)
Category rank#25,371
Street price$9
Power3 W
Performance per dollar38.56
Released2024

Specifications

BrandBrontix
ModelBrontix FN-3998 Ultra
Size120 × 120 × 25 mm
Speed400–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3998 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/894640 (accessed 2026-10-19).