Hardware Spec Index

Caldera FN-6657 SE 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6657-SE · Released 2019 · Updated 2026-10-20

Key facts

Benchmark index678 (Case Fans scale)
Category rank#40,385
Street price$19
Power4 W
Performance per dollar35.68
Released2019

Specifications

BrandCaldera
ModelCaldera FN-6657 SE
Size140 × 140 × 25 mm
Speed200–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise26 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6657 SE 140mm PWM Case Fan”, https://vextor7.com/item/20050304 (accessed 2026-10-20).