Hardware Spec Index

Caldera FN-3891 Ultra 140mm PWM ARGB Case Fan

Case Fans · Caldera · SKU FN3891-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index859 (Case Fans scale)
Category rank#7,654
Street price$29
Power3 W
Performance per dollar29.62
Released2025

Specifications

BrandCaldera
ModelCaldera FN-3891 Ultra
Size140 × 140 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise35 dBA
BearingMagnetic levitation
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3891 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/9260244 (accessed 2026-10-21).