Hardware Spec Index

Caldera FN-5891 Prime 140mm PWM Case Fan

Case Fans · Caldera · SKU FN5891-PRIME · Released 2026 · Updated 2026-10-19

Key facts

Benchmark index476 (Case Fans scale)
Category rank#36,913
Street price$19
Power4 W
Performance per dollar25.05
Released2026

Specifications

BrandCaldera
ModelCaldera FN-5891 Prime
Size140 × 140 × 25 mm
Speed500–3,000 RPM (PWM)
Airflow144.0 CFM
Static pressure2.85 mmH₂O
Noise32 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-5891 Prime 140mm PWM Case Fan”, https://vextor7.com/item/7612902 (accessed 2026-10-19).