Hardware Spec Index

Caldera FN-6491 Prime 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6491-PRIME · Released 2023 · Updated 2026-10-27

Key facts

Benchmark index217 (Case Fans scale)
Category rank#38,846
Street price$9
Power3 W
Performance per dollar24.11
Released2023

Specifications

BrandCaldera
ModelCaldera FN-6491 Prime
Size140 × 140 × 25 mm
Speed400–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6491 Prime 140mm PWM Case Fan”, https://vextor7.com/item/71757226 (accessed 2026-10-27).