Hardware Spec Index

Brontix FN-6421 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN6421-ULTRA · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index327 (Case Fans scale)
Category rank#41,148
Street price$9
Power3 W
Performance per dollar36.33
Released2025

Specifications

BrandBrontix
ModelBrontix FN-6421 Ultra
Size120 × 120 × 25 mm
Speed200–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-6421 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/4544232 (accessed 2026-10-19).