Hardware Spec Index

Brontix FN-4091 Ultra 140mm PWM Case Fan

Case Fans · Brontix · SKU FN4091-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index566 (Case Fans scale)
Category rank#23,265
Street price$19
Power3 W
Performance per dollar29.79
Released2021

Specifications

BrandBrontix
ModelBrontix FN-4091 Ultra
Size140 × 140 × 25 mm
Speed200–1,500 RPM (PWM)
Airflow72.0 CFM
Static pressure1.43 mmH₂O
Noise28 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Brontix FN-8135 SE 120mm PWM Case Fan (3-Pack)796$19Compare
Corvane FN-6050 Ti 120mm PWM Case Fan245$9Compare
Teralux FN-1357 Prime 120mm PWM ARGB Case Fan822$19Compare
Caldera FN-5530 Core 120mm PWM ARGB Case Fan1,262$49Compare
Zephyra FN-6151 Prime 140mm PWM Case Fan569$19Compare
Corvane FN-4391 SE 140mm PWM ARGB Case Fan (3-Pack)1,249$49Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-4091 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/2587632 (accessed 2026-10-22).