Hardware Spec Index

Brontix FN-5640 Prime 140mm PWM Case Fan

Case Fans · Brontix · SKU FN5640-PRIME · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index355 (Case Fans scale)
Category rank#9,650
Street price$9
Power3 W
Performance per dollar39.44
Released2022

Specifications

BrandBrontix
ModelBrontix FN-5640 Prime
Size140 × 140 × 25 mm
Speed400–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise26 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Brontix FN-2391 Ti 120mm PWM ARGB Case Fan1,196$49Compare
Caldera FN-7179 XT 120mm PWM Case Fan (3-Pack)422$9Compare
Zephyra FN-2813 Plus 140mm PWM Case Fan606$19Compare
Corvane FN-5131 Max 120mm PWM ARGB Case Fan902$29Compare
Teralux FN-5874 Ultra 120mm PWM Case Fan371$19Compare
Zephyra FN-2334 XT 140mm PWM ARGB Case Fan976$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-5640 Prime 140mm PWM Case Fan”, https://vextor7.com/item/21523504 (accessed 2026-10-24).