Hardware Spec Index

Caldera FN-6558 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6558-ULTRA · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index707 (Case Fans scale)
Category rank#40,726
Street price$29
Power3 W
Performance per dollar24.38
Released2021

Specifications

BrandCaldera
ModelCaldera FN-6558 Ultra
Size140 × 140 × 25 mm
Speed500–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise30 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6558 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/72949430 (accessed 2026-10-21).