Hardware Spec Index

Caldera FN-5681 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN5681-ULTRA · Released 2021 · Updated 2026-10-22

Key facts

Benchmark index677 (Case Fans scale)
Category rank#21,740
Street price$19
Power3 W
Performance per dollar35.63
Released2021

Specifications

BrandCaldera
ModelCaldera FN-5681 Ultra
Size140 × 140 × 25 mm
Speed500–2,000 RPM (PWM)
Airflow96.0 CFM
Static pressure1.90 mmH₂O
Noise27 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5681 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/9935720 (accessed 2026-10-22).