Hardware Spec Index

Caldera FN-3940 Prime 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3940-PRIME · Released 2020 · Updated 2026-10-19

Key facts

Benchmark index278 (Case Fans scale)
Category rank#24,683
Street price$9
Power4 W
Performance per dollar30.89
Released2020

Specifications

BrandCaldera
ModelCaldera FN-3940 Prime
Size120 × 120 × 25 mm
Speed400–2,800 RPM (PWM)
Airflow95.2 CFM
Static pressure3.08 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3940 Prime 120mm PWM Case Fan”, https://vextor7.com/item/45309479 (accessed 2026-10-19).