Hardware Spec Index

Caldera FN-1991 Pro 140mm PWM Case Fan

Case Fans · Caldera · SKU FN1991-PRO · Released 2020 · Updated 2026-10-24

Key facts

Benchmark index590 (Case Fans scale)
Category rank#19,467
Street price$19
Power4 W
Performance per dollar31.05
Released2020

Specifications

BrandCaldera
ModelCaldera FN-1991 Pro
Size140 × 140 × 25 mm
Speed500–2,500 RPM (PWM)
Airflow120.0 CFM
Static pressure2.38 mmH₂O
Noise31 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-1991 Pro 140mm PWM Case Fan”, https://vextor7.com/item/94865432 (accessed 2026-10-24).