Hardware Spec Index

Caldera FN-3661 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN3661-PRIME · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index391 (Case Fans scale)
Category rank#39,577
Street price$9
Power4 W
Performance per dollar43.44
Released2025

Specifications

BrandCaldera
ModelCaldera FN-3661 Prime
Size120 × 120 × 25 mm
Speed500–2,600 RPM (PWM)
Airflow88.4 CFM
Static pressure2.86 mmH₂O
Noise25 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3661 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/32631208 (accessed 2026-10-24).