Hardware Spec Index

Teralux FN-3940 Ultra 120mm PWM ARGB Case Fan

Case Fans · Teralux · SKU FN3940-ULTRA · Released 2026 · Updated 2026-10-26

Key facts

Benchmark index1,320 (Case Fans scale)
Category rank#10,326
Street price$49
Power3 W
Performance per dollar26.94
Released2026

Specifications

BrandTeralux
ModelTeralux FN-3940 Ultra
Size120 × 120 × 25 mm
Speed500–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise27 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Corvane FN-6341 Core 120mm PWM Case Fan259$9Compare
Zephyra FN-4164 Max 120mm PWM Case Fan544$19Compare
Corvane FN-3426 Plus 120mm PWM ARGB Case Fan902$29Compare
Caldera FN-9936 Max 140mm PWM Case Fan422$19Compare
Corvane FN-8818 Pro 120mm PWM Case Fan (3-Pack)709$19Compare
Caldera FN-9093 Plus 120mm PWM ARGB Case Fan (3-Pack)1,229$39Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Teralux FN-3940 Ultra 120mm PWM ARGB Case Fan”, https://vextor7.com/item/1229459 (accessed 2026-10-26).