Hardware Spec Index

Caldera FN-6421 Pro 140mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN6421-PRO · Released 2023 · Updated 2026-10-21

Key facts

Benchmark index496 (Case Fans scale)
Category rank#17,032
Street price$19
Power3 W
Performance per dollar26.11
Released2023

Specifications

BrandCaldera
ModelCaldera FN-6421 Pro
Size140 × 140 × 25 mm
Speed300–1,600 RPM (PWM)
Airflow76.8 CFM
Static pressure1.52 mmH₂O
Noise28 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6421 Pro 140mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/9764134 (accessed 2026-10-21).