Hardware Spec Index

Caldera FN-6891 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6891-ULTRA · Released 2025 · Updated 2026-10-19

Key facts

Benchmark index667 (Case Fans scale)
Category rank#33,403
Street price$19
Power4 W
Performance per dollar35.11
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6891 Ultra
Size140 × 140 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise24 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6891 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/17532139 (accessed 2026-10-19).