Hardware Spec Index

Brontix FN-3891 Pro 120mm PWM Case Fan

Case Fans · Brontix · SKU FN3891-PRO · Released 2024 · Updated 2026-10-22

Key facts

Benchmark index750 (Case Fans scale)
Category rank#40,554
Street price$29
Power3 W
Performance per dollar25.86
Released2024

Specifications

BrandBrontix
ModelBrontix FN-3891 Pro
Size120 × 120 × 25 mm
Speed200–2,300 RPM (PWM)
Airflow78.2 CFM
Static pressure2.53 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Zephyra FN-5881 Core 140mm PWM Case Fan214$9Compare
Caldera FN-4433 Core 140mm PWM ARGB Case Fan (3-Pack)1,214$49Compare
Corvane FN-3792 Plus 120mm PWM ARGB Case Fan1,274$49Compare
Corvane FN-7748 Prime 120mm PWM Case Fan (3-Pack)584$19Compare
Teralux FN-8907 Ti 120mm PWM Case Fan246$9Compare
Teralux FN-5279 Ultra 120mm PWM ARGB Case Fan1,042$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3891 Pro 120mm PWM Case Fan”, https://vextor7.com/item/7739477 (accessed 2026-10-22).