Hardware Spec Index

Caldera FN-3491 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3491-ULTRA · Released 2026 · Updated 2026-10-22

Key facts

Benchmark index305 (Case Fans scale)
Category rank#13,976
Street price$9
Power4 W
Performance per dollar33.89
Released2026

Specifications

BrandCaldera
ModelCaldera FN-3491 Ultra
Size120 × 120 × 25 mm
Speed500–2,600 RPM (PWM)
Airflow88.4 CFM
Static pressure2.86 mmH₂O
Noise27 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3491 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/11085566 (accessed 2026-10-22).