Hardware Spec Index

Brontix FN-3911 Plus 140mm PWM Case Fan (3-Pack)

Case Fans · Brontix · SKU FN3911-PLUS · Released 2021 · Updated 2026-10-23

Key facts

Benchmark index579 (Case Fans scale)
Category rank#23,876
Street price$19
Power4 W
Performance per dollar30.47
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3911 Plus
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-2382 Pro 140mm PWM Case Fan768$29Compare
Caldera FN-7276 Max 120mm PWM Case Fan534$19Compare
Teralux FN-5760 Pro 120mm PWM ARGB Case Fan (3-Pack)942$29Compare
Teralux FN-3573 Pro 120mm PWM ARGB Case Fan938$29Compare
Corvane FN-6460 Core 120mm PWM Case Fan830$29Compare
Brontix FN-7255 Max 120mm PWM Case Fan (3-Pack)790$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3911 Plus 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/2994790 (accessed 2026-10-23).