Zephyra FN-3931 Ultra 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Zephyra · SKU FN3931-ULTRA · Released 2025 · Updated 2026-10-19
Key facts
| Benchmark index | 1,069 (Case Fans scale) |
|---|---|
| Category rank | #7,731 |
| Street price | $29 |
| Power | 4 W |
| Performance per dollar | 36.86 |
| Released | 2025 |
Specifications
| Brand | Zephyra |
|---|---|
| Model | Zephyra FN-3931 Ultra |
| Size | 120 × 120 × 25 mm |
| Speed | 200–2,500 RPM (PWM) |
| Airflow | 85.0 CFM |
| Static pressure | 2.75 mmH₂O |
| Noise | 34 dBA |
| Bearing | Fluid dynamic bearing |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 100,000 hours |
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Cite this page: Hardware Spec Index, “Zephyra FN-3931 Ultra 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/45912371 (accessed 2026-10-19).