Hardware Spec Index

Caldera FN-6991 Pro 140mm PWM Case Fan

Case Fans · Caldera · SKU FN6991-PRO · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index600 (Case Fans scale)
Category rank#7,256
Street price$19
Power3 W
Performance per dollar31.58
Released2021

Specifications

BrandCaldera
ModelCaldera FN-6991 Pro
Size140 × 140 × 25 mm
Speed200–2,100 RPM (PWM)
Airflow100.8 CFM
Static pressure2.00 mmH₂O
Noise22 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6991 Pro 140mm PWM Case Fan”, https://vextor7.com/item/7573243 (accessed 2026-10-20).