Hardware Spec Index

Caldera FN-3891 Core 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3891-CORE · Released 2023 · Updated 2026-10-24

Key facts

Benchmark index487 (Case Fans scale)
Category rank#33,397
Street price$19
Power4 W
Performance per dollar25.63
Released2023

Specifications

BrandCaldera
ModelCaldera FN-3891 Core
Size120 × 120 × 25 mm
Speed400–2,700 RPM (PWM)
Airflow91.8 CFM
Static pressure2.97 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3891 Core 120mm PWM Case Fan”, https://vextor7.com/item/32633630 (accessed 2026-10-24).