Hardware Spec Index

Brontix FN-6921 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN6921-ULTRA · Released 2022 · Updated 2026-10-18

Key facts

Benchmark index209 (Case Fans scale)
Category rank#33,225
Street price$9
Power2 W
Performance per dollar23.22
Released2022

Specifications

BrandBrontix
ModelBrontix FN-6921 Ultra
Size120 × 120 × 25 mm
Speed300–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise26 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-6921 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/698779 (accessed 2026-10-18).