Hardware Spec Index

Brontix FN-3864 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3864-ULTRA · Released 2026 · Updated 2026-10-24

Key facts

Benchmark index211 (Case Fans scale)
Category rank#9,789
Street price$9
Power4 W
Performance per dollar23.44
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3864 Ultra
Size140 × 140 × 25 mm
Speed300–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3864 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/13625345 (accessed 2026-10-24).