Hardware Spec Index

Caldera FN-4231 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN4231-ULTRA · Released 2020 · Updated 2026-10-26

Key facts

Benchmark index554 (Case Fans scale)
Category rank#46,640
Street price$19
Power3 W
Performance per dollar29.16
Released2020

Specifications

BrandCaldera
ModelCaldera FN-4231 Ultra
Size140 × 140 × 25 mm
Speed500–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4231 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/2379154 (accessed 2026-10-26).