Hardware Spec Index

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

Case Fans · Caldera · SKU FN4991-PRIME · Released 2024 · Updated 2026-10-23

Key facts

Benchmark index380 (Case Fans scale)
Category rank#18,801
Street price$9
Power4 W
Performance per dollar42.22
Released2024

Specifications

BrandCaldera
ModelCaldera FN-4991 Prime
Size120 × 120 × 25 mm
Speed500–3,000 RPM (PWM)
Airflow102.0 CFM
Static pressure3.30 mmH₂O
Noise33 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime50,000 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/121013 (accessed 2026-10-23).