Hardware Spec Index

Caldera FN-5781 Prime 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN5781-PRIME · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index652 (Case Fans scale)
Category rank#23,404
Street price$19
Power4 W
Performance per dollar34.32
Released2021

Specifications

BrandCaldera
ModelCaldera FN-5781 Prime
Size140 × 140 × 25 mm
Speed200–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise36 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5781 Prime 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/1864346 (accessed 2026-10-22).