Hardware Spec Index

Caldera FN-5681 Ultra 140mm PWM ARGB Case Fan

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

Key facts

Benchmark index1,400 (Case Fans scale)
Category rank#29,853
Street price$49
Power3 W
Performance per dollar28.57
Released2021

Specifications

BrandCaldera
ModelCaldera FN-5681 Ultra
Size140 × 140 × 25 mm
Speed400–2,400 RPM (PWM)
Airflow115.2 CFM
Static pressure2.28 mmH₂O
Noise22 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5681 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/18197899 (accessed 2026-10-22).