Hardware Spec Index

Brontix FN-3991 Max 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3991-MAX · Released 2020 · Updated 2026-10-27

Key facts

Benchmark index650 (Case Fans scale)
Category rank#20,194
Street price$19
Power4 W
Performance per dollar34.21
Released2020

Specifications

BrandBrontix
ModelBrontix FN-3991 Max
Size120 × 120 × 25 mm
Speed200–2,900 RPM (PWM)
Airflow98.6 CFM
Static pressure3.19 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-8014 Core 120mm PWM ARGB Case Fan906$29Compare
Caldera FN-3420 Pro 120mm PWM ARGB Case Fan970$39Compare
Zephyra FN-7362 Pro 120mm PWM Case Fan (3-Pack)521$19Compare
Zephyra FN-2723 Max 120mm PWM Case Fan449$19Compare
Corvane FN-8226 Plus 120mm PWM ARGB Case Fan1,185$39Compare
Teralux FN-8391 Ultra 120mm PWM Case Fan (3-Pack)499$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3991 Max 120mm PWM Case Fan”, https://vextor7.com/item/24377299 (accessed 2026-10-27).