Hardware Spec Index

Brontix FN-8991 XT 140mm PWM Case Fan

Case Fans · Brontix · SKU FN8991-XT · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index779 (Case Fans scale)
Category rank#307
Street price$19
Power3 W
Performance per dollar41.00
Released2025

Specifications

BrandBrontix
ModelBrontix FN-8991 XT
Size140 × 140 × 25 mm
Speed400–2,300 RPM (PWM)
Airflow110.4 CFM
Static pressure2.19 mmH₂O
Noise31 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Caldera FN-1557 Plus 120mm PWM Case Fan629$19Compare
Zephyra FN-2700 XT 120mm PWM ARGB Case Fan1,392$49Compare
Caldera FN-9905 SE 120mm PWM ARGB Case Fan1,348$49Compare
Brontix FN-9650 Plus 140mm PWM ARGB Case Fan1,083$39Compare
Caldera FN-3931 Prime 120mm PWM Case Fan236$9Compare
Caldera FN-2930 Edge 120mm PWM ARGB Case Fan1,127$39Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-8991 XT 140mm PWM Case Fan”, https://vextor7.com/item/3171998 (accessed 2026-10-19).