Hardware Spec Index

Caldera FN-3659 Ultra 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN3659-ULTRA · Released 2025 · Updated 2026-10-24

Key facts

Benchmark index794 (Case Fans scale)
Category rank#48,771
Street price$19
Power3 W
Performance per dollar41.79
Released2025

Specifications

BrandCaldera
ModelCaldera FN-3659 Ultra
Size140 × 140 × 25 mm
Speed400–1,800 RPM (PWM)
Airflow86.4 CFM
Static pressure1.71 mmH₂O
Noise36 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3659 Ultra 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/2324936 (accessed 2026-10-24).