Hardware Spec Index

Zephyra FN-3781 SE 120mm PWM Case Fan

Case Fans · Zephyra · SKU FN3781-SE · Released 2021 · Updated 2026-10-24

Key facts

Benchmark index725 (Case Fans scale)
Category rank#11,124
Street price$19
Power2 W
Performance per dollar38.16
Released2021

Specifications

BrandZephyra
ModelZephyra FN-3781 SE
Size120 × 120 × 25 mm
Speed500–1,400 RPM (PWM)
Airflow47.6 CFM
Static pressure1.54 mmH₂O
Noise28 dBA
BearingFluid dynamic bearing
Connector4-pin PWM
Rated lifetime50,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Teralux FN-2840 Edge 120mm PWM ARGB Case Fan886$29Compare
Zephyra FN-2824 Ti 140mm PWM Case Fan436$19Compare
Caldera FN-7383 Ultra 120mm PWM Case Fan (3-Pack)227$9Compare
Brontix FN-1771 Edge 140mm PWM Case Fan446$19Compare
Brontix FN-6312 XT 140mm PWM ARGB Case Fan1,110$39Compare
Caldera FN-7467 Ti 120mm PWM Case Fan761$19Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Zephyra FN-3781 SE 120mm PWM Case Fan”, https://vextor7.com/item/94823600 (accessed 2026-10-24).