Hardware Spec Index

Caldera FN-6491 XT 140mm PWM ARGB Case Fan

Case Fans · Caldera · SKU FN6491-XT · Released 2020 · Updated 2026-10-25

Key facts

Benchmark index1,352 (Case Fans scale)
Category rank#1,343
Street price$49
Power4 W
Performance per dollar27.59
Released2020

Specifications

BrandCaldera
ModelCaldera FN-6491 XT
Size140 × 140 × 25 mm
Speed500–2,800 RPM (PWM)
Airflow134.4 CFM
Static pressure2.66 mmH₂O
Noise27 dBA
BearingRifle bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime50,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6491 XT 140mm PWM ARGB Case Fan”, https://vextor7.com/item/6566764 (accessed 2026-10-25).