Hardware Spec Index

Caldera FN-3581 Ultra 120mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN3581-ULTRA · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index347 (Case Fans scale)
Category rank#16,682
Street price$9
Power3 W
Performance per dollar38.56
Released2026

Specifications

BrandCaldera
ModelCaldera FN-3581 Ultra
Size120 × 120 × 25 mm
Speed400–2,200 RPM (PWM)
Airflow74.8 CFM
Static pressure2.42 mmH₂O
Noise34 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3581 Ultra 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/76985926 (accessed 2026-10-25).