Hardware Spec Index

Caldera FN-3921 Max 140mm PWM Case Fan

Case Fans · Caldera · SKU FN3921-MAX · Released 2026 · Updated 2026-10-20

Key facts

Benchmark index470 (Case Fans scale)
Category rank#34,572
Street price$19
Power3 W
Performance per dollar24.74
Released2026

Specifications

BrandCaldera
ModelCaldera FN-3921 Max
Size140 × 140 × 25 mm
Speed300–1,700 RPM (PWM)
Airflow81.6 CFM
Static pressure1.61 mmH₂O
Noise34 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime100,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3921 Max 140mm PWM Case Fan”, https://vextor7.com/item/3987387 (accessed 2026-10-20).