Hardware Spec Index

Zephyra FN-3921 Core 120mm PWM Case Fan (3-Pack)

Case Fans · Zephyra · SKU FN3921-CORE · Released 2022 · Updated 2026-10-24

Key facts

Benchmark index477 (Case Fans scale)
Category rank#44,299
Street price$19
Power3 W
Performance per dollar25.11
Released2022

Specifications

BrandZephyra
ModelZephyra FN-3921 Core
Size120 × 120 × 25 mm
Speed400–2,000 RPM (PWM)
Airflow68.0 CFM
Static pressure2.20 mmH₂O
Noise29 dBA
BearingRifle bearing
Connector4-pin PWM
Rated lifetime150,000 hours

Related guides

AIO Liquid Cooling vs Air Cooling for CPUs

Similar Case Fans

ModelBenchmarkPriceCompare
Corvane FN-3142 Max 120mm PWM Case Fan324$9Compare
Corvane FN-4583 Pro 140mm PWM Case Fan775$29Compare
Teralux FN-9573 Plus 120mm PWM ARGB Case Fan (3-Pack)1,258$49Compare
Zephyra FN-1468 Ti 140mm PWM Case Fan698$19Compare
Brontix FN-5873 Edge 120mm PWM Case Fan751$19Compare
Brontix FN-7389 Ultra 120mm PWM Case Fan (3-Pack)438$9Compare

All Case Fans · JSON

Cite this page: Hardware Spec Index, “Zephyra FN-3921 Core 120mm PWM Case Fan (3-Pack)”, https://vextor7.com/item/73675853 (accessed 2026-10-24).