Hardware Spec Index

Brontix FN-3689 Prime 140mm PWM Case Fan

Case Fans · Brontix · SKU FN3689-PRIME · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index617 (Case Fans scale)
Category rank#15,583
Street price$19
Power3 W
Performance per dollar32.47
Released2026

Specifications

BrandBrontix
ModelBrontix FN-3689 Prime
Size140 × 140 × 25 mm
Speed300–2,100 RPM (PWM)
Airflow100.8 CFM
Static pressure2.00 mmH₂O
Noise22 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Corvane FN-4782 Max 140mm PWM Case Fan (3-Pack)359$9Compare
Teralux FN-2399 SE 140mm PWM Case Fan (3-Pack)472$9Compare
Brontix FN-8754 Ultra 120mm PWM Case Fan384$9Compare
Brontix FN-5199 XT 140mm PWM Case Fan (3-Pack)631$19Compare
Caldera FN-6245 XT 120mm PWM ARGB Case Fan1,050$39Compare
Corvane FN-8669 XT 120mm PWM Case Fan (3-Pack)331$9Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3689 Prime 140mm PWM Case Fan”, https://vextor7.com/item/20113807 (accessed 2026-10-19).