Hardware Spec Index

Caldera FN-2181 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN2181-ULTRA · Released 2026 · Updated 2026-10-21

Key facts

Benchmark index421 (Case Fans scale)
Category rank#34,106
Street price$9
Power2 W
Performance per dollar46.78
Released2026

Specifications

BrandCaldera
ModelCaldera FN-2181 Ultra
Size120 × 120 × 25 mm
Speed300–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise30 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-2181 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/53315316 (accessed 2026-10-21).