Hardware Spec Index

Caldera FN-4758 Ultra 140mm PWM Case Fan

Case Fans · Caldera · SKU FN4758-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index338 (Case Fans scale)
Category rank#46,543
Street price$9
Power4 W
Performance per dollar37.56
Released2021

Specifications

BrandCaldera
ModelCaldera FN-4758 Ultra
Size140 × 140 × 25 mm
Speed400–2,900 RPM (PWM)
Airflow139.2 CFM
Static pressure2.75 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4758 Ultra 140mm PWM Case Fan”, https://vextor7.com/item/1201293 (accessed 2026-10-20).