Hardware Spec Index

Brontix FN-3855 Ultra 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3855-ULTRA · Released 2019 · Updated 2026-10-21

Key facts

Benchmark index536 (Case Fans scale)
Category rank#48,150
Street price$19
Power4 W
Performance per dollar28.21
Released2019

Specifications

BrandBrontix
ModelBrontix FN-3855 Ultra
Size120 × 120 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Brontix FN-3855 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/10106263 (accessed 2026-10-21).