Hardware Spec Index

Caldera FN-3688 Ultra 140mm PWM ARGB Case Fan

Case Fans · Caldera · SKU FN3688-ULTRA · Released 2021 · Updated 2026-10-20

Key facts

Benchmark index1,083 (Case Fans scale)
Category rank#18,886
Street price$29
Power3 W
Performance per dollar37.34
Released2021

Specifications

BrandCaldera
ModelCaldera FN-3688 Ultra
Size140 × 140 × 25 mm
Speed500–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise26 dBA
BearingFluid dynamic bearing
Connector4-pin PWM + 3-pin 5V ARGB
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3688 Ultra 140mm PWM ARGB Case Fan”, https://vextor7.com/item/7324940 (accessed 2026-10-20).