Hardware Spec Index

Caldera FN-3661 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3661-ULTRA · Released 2024 · Updated 2026-10-19

Key facts

Benchmark index428 (Case Fans scale)
Category rank#39,384
Street price$9
Power3 W
Performance per dollar47.56
Released2024

Specifications

BrandCaldera
ModelCaldera FN-3661 Ultra
Size120 × 120 × 25 mm
Speed400–2,100 RPM (PWM)
Airflow71.4 CFM
Static pressure2.31 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3661 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/881990 (accessed 2026-10-19).