Hardware Spec Index

Caldera FN-3691 Plus 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN3691-PLUS · Released 2021 · Updated 2026-10-26

Key facts

Benchmark index696 (Case Fans scale)
Category rank#32,570
Street price$19
Power3 W
Performance per dollar36.63
Released2021

Specifications

BrandCaldera
ModelCaldera FN-3691 Plus
Size140 × 140 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise34 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3691 Plus 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/7840745 (accessed 2026-10-26).