Hardware Spec Index

Caldera FN-3643 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN3643-ULTRA · Released 2020 · Updated 2026-10-23

Key facts

Benchmark index505 (Case Fans scale)
Category rank#29,277
Street price$19
Power3 W
Performance per dollar26.58
Released2020

Specifications

BrandCaldera
ModelCaldera FN-3643 Ultra
Size120 × 120 × 25 mm
Speed300–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise24 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3643 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/92377507 (accessed 2026-10-23).