Hardware Spec Index

Caldera FN-4991 Prime 120mm PWM Case Fan (3-Pack)

Case Fans · Caldera · SKU FN4991-PRIME · Released 2021 · Updated 2026-10-21

Key facts

Benchmark index269 (Case Fans scale)
Category rank#4,491
Street price$9
Power3 W
Performance per dollar29.89
Released2021

Specifications

BrandCaldera
ModelCaldera FN-4991 Prime
Size120 × 120 × 25 mm
Speed400–1,800 RPM (PWM)
Airflow61.2 CFM
Static pressure1.98 mmH₂O
Noise31 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-4991 Prime 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/3911779 (accessed 2026-10-21).