Teralux FN-3681 Ultra 140mm PWM ARGB Case Fan (3-Pack)
Case Fans · Teralux · SKU FN3681-ULTRA · Released 2020 · Updated 2026-10-20
Key facts
| Benchmark index | 934 (Case Fans scale) |
|---|---|
| Category rank | #26,273 |
| Street price | $29 |
| Power | 4 W |
| Performance per dollar | 32.21 |
| Released | 2020 |
Specifications
| Brand | Teralux |
|---|---|
| Model | Teralux FN-3681 Ultra |
| Size | 140 × 140 × 25 mm |
| Speed | 300–2,900 RPM (PWM) |
| Airflow | 139.2 CFM |
| Static pressure | 2.75 mmH₂O |
| Noise | 30 dBA |
| Bearing | Fluid dynamic bearing |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 150,000 hours |
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Cite this page: Hardware Spec Index, “Teralux FN-3681 Ultra 140mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/8553588 (accessed 2026-10-20).