Zephyra FN-3990 Ultra 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Zephyra · SKU FN3990-ULTRA · Released 2021 · Updated 2026-10-19
Key facts
| Benchmark index | 1,126 (Case Fans scale) |
|---|---|
| Category rank | #37,082 |
| Street price | $39 |
| Power | 3 W |
| Performance per dollar | 28.87 |
| Released | 2021 |
Specifications
| Brand | Zephyra |
|---|---|
| Model | Zephyra FN-3990 Ultra |
| Size | 120 × 120 × 25 mm |
| Speed | 400–2,300 RPM (PWM) |
| Airflow | 78.2 CFM |
| Static pressure | 2.53 mmH₂O |
| Noise | 36 dBA |
| Bearing | Magnetic levitation |
| 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-3990 Ultra 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/13374367 (accessed 2026-10-19).