Hardware Spec Index

Caldera FN-1855 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN1855-ULTRA · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index641 (Case Fans scale)
Category rank#11,481
Street price$19
Power4 W
Performance per dollar33.74
Released2021

Specifications

BrandCaldera
ModelCaldera FN-1855 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-1855 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/90287341 (accessed 2026-10-24).