Hardware Spec Index

Caldera FN-5666 Prime 140mm PWM Case Fan

Case Fans · Caldera · SKU FN5666-PRIME · Released 2025 · Updated 2026-10-21

Key facts

Benchmark index763 (Case Fans scale)
Category rank#10,822
Street price$29
Power4 W
Performance per dollar26.31
Released2025

Specifications

BrandCaldera
ModelCaldera FN-5666 Prime
Size140 × 140 × 25 mm
Speed300–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise28 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5666 Prime 140mm PWM Case Fan”, https://vextor7.com/item/16631412 (accessed 2026-10-21).