Hardware Spec Index

Caldera FN-6638 Prime 120mm PWM Case Fan

Case Fans · Caldera · SKU FN6638-PRIME · Released 2020 · Updated 2026-10-22

Key facts

Benchmark index436 (Case Fans scale)
Category rank#4,512
Street price$9
Power3 W
Performance per dollar48.44
Released2020

Specifications

BrandCaldera
ModelCaldera FN-6638 Prime
Size120 × 120 × 25 mm
Speed200–1,700 RPM (PWM)
Airflow57.8 CFM
Static pressure1.87 mmH₂O
Noise29 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-6638 Prime 120mm PWM Case Fan”, https://vextor7.com/item/13620381 (accessed 2026-10-22).