Hardware Spec Index

Brontix FN-3946 Prime 140mm PWM ARGB Case Fan

Case Fans · Brontix · SKU FN3946-PRIME · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index1,138 (Case Fans scale)
Category rank#4,925
Street price$39
Power3 W
Performance per dollar29.18
Released2021

Specifications

BrandBrontix
ModelBrontix FN-3946 Prime
Size140 × 140 × 25 mm
Speed500–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise36 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Zephyra FN-7307 Plus 140mm PWM Case Fan (3-Pack)241$9Compare
Corvane FN-8694 Core 120mm PWM Case Fan546$19Compare
Caldera FN-1018 Pro 120mm PWM Case Fan616$19Compare
Corvane FN-9698 Ultra 120mm PWM Case Fan594$19Compare
Caldera FN-8716 XT 140mm PWM Case Fan (3-Pack)546$19Compare
Caldera FN-1735 Core 120mm PWM ARGB Case Fan1,038$29Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Brontix FN-3946 Prime 140mm PWM ARGB Case Fan”, https://vextor7.com/item/84896180 (accessed 2026-10-24).