Brontix FN-3921 Prime 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Brontix · SKU FN3921-PRIME · Released 2019 · Updated 2026-10-21
Key facts
| Benchmark index | 968 (Case Fans scale) |
|---|---|
| Category rank | #17,458 |
| Street price | $29 |
| Power | 3 W |
| Performance per dollar | 33.38 |
| Released | 2019 |
Specifications
| Brand | Brontix |
|---|---|
| Model | Brontix FN-3921 Prime |
| Size | 120 × 120 × 25 mm |
| Speed | 300–2,000 RPM (PWM) |
| Airflow | 68.0 CFM |
| Static pressure | 2.20 mmH₂O |
| Noise | 24 dBA |
| Bearing | Rifle bearing |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 100,000 hours |
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Cite this page: Hardware Spec Index, “Brontix FN-3921 Prime 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/4421098 (accessed 2026-10-21).