Hardware Spec Index

Caldera FN-3921 Prime 140mm PWM Case Fan

Case Fans · Caldera · SKU FN3921-PRIME · Released 2026 · Updated 2026-10-25

Key facts

Benchmark index416 (Case Fans scale)
Category rank#18,844
Street price$9
Power3 W
Performance per dollar46.22
Released2026

Specifications

BrandCaldera
ModelCaldera FN-3921 Prime
Size140 × 140 × 25 mm
Speed400–2,200 RPM (PWM)
Airflow105.6 CFM
Static pressure2.09 mmH₂O
Noise31 dBA
BearingMagnetic levitation
Connector4-pin PWM
Rated lifetime150,000 hours

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Cite this page: Hardware Spec Index, “Caldera FN-3921 Prime 140mm PWM Case Fan”, https://vextor7.com/item/96435392 (accessed 2026-10-25).