Hardware Spec Index

Caldera FN-6391 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN6391-ULTRA · Released 2025 · Updated 2026-10-25

Key facts

Benchmark index541 (Case Fans scale)
Category rank#17,085
Street price$19
Power3 W
Performance per dollar28.47
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6391 Ultra
Size120 × 120 × 25 mm
Speed200–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise23 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6391 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/19178487 (accessed 2026-10-25).