Hardware Spec Index

Brontix FN-6643 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN6643-ULTRA · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index636 (Case Fans scale)
Category rank#43,705
Street price$19
Power3 W
Performance per dollar33.47
Released2026

Specifications

BrandBrontix
ModelBrontix FN-6643 Ultra
Size140 × 140 × 25 mm
Speed500–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise36 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-6643 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/6466574 (accessed 2026-10-26).