Hardware Spec Index

Caldera FN-3681 Core 140mm PWM Case Fan

Case Fans · Caldera · SKU FN3681-CORE · Released 2019 · Updated 2026-10-26

Key facts

Benchmark index796 (Case Fans scale)
Category rank#14,582
Street price$29
Power4 W
Performance per dollar27.45
Released2019

Specifications

BrandCaldera
ModelCaldera FN-3681 Core
Size140 × 140 × 25 mm
Speed400–2,600 RPM (PWM)
Airflow124.8 CFM
Static pressure2.47 mmH₂O
Noise32 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3681 Core 140mm PWM Case Fan”, https://vextor7.com/item/50453 (accessed 2026-10-26).