Hardware Spec Index

Caldera FN-4251 Ultra 120mm PWM Case Fan

Case Fans · Caldera · SKU FN4251-ULTRA · Released 2020 · Updated 2026-10-20

Key facts

Benchmark index209 (Case Fans scale)
Category rank#12,264
Street price$9
Power4 W
Performance per dollar23.22
Released2020

Specifications

BrandCaldera
ModelCaldera FN-4251 Ultra
Size120 × 120 × 25 mm
Speed400–2,500 RPM (PWM)
Airflow85.0 CFM
Static pressure2.75 mmH₂O
Noise24 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4251 Ultra 120mm PWM Case Fan”, https://vextor7.com/item/4137580 (accessed 2026-10-20).