Hardware Spec Index

Caldera FN-6633 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6633-ULTRA · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index239 (Case Fans scale)
Category rank#33,166
Street price$9
Power4 W
Performance per dollar26.56
Released2025

Specifications

BrandCaldera
ModelCaldera FN-6633 Ultra
Size140 × 140 × 25 mm
Speed500–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6633 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/9490905 (accessed 2026-10-21).