Hardware Spec Index

Caldera FN-3657 XT 140mm PWM Case Fan

Case Fans · Caldera · SKU FN3657-XT · Released 2022 · Updated 2026-10-20

Key facts

Benchmark index347 (Case Fans scale)
Category rank#46,300
Street price$9
Power2 W
Performance per dollar38.56
Released2022

Specifications

BrandCaldera
ModelCaldera FN-3657 XT
Size140 × 140 × 25 mm
Speed300–1,400 RPM (PWM)
Airflow67.2 CFM
Static pressure1.33 mmH₂O
Noise33 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3657 XT 140mm PWM Case Fan”, https://vextor7.com/item/25759538 (accessed 2026-10-20).