Caldera FN-3991 Pro 120mm PWM ARGB Case Fan (3-Pack)
Case Fans · Caldera · SKU FN3991-PRO · Released 2022 · Updated 2026-10-26
Key facts
| Benchmark index | 913 (Case Fans scale) |
|---|---|
| Category rank | #35,571 |
| Street price | $29 |
| Power | 3 W |
| Performance per dollar | 31.48 |
| Released | 2022 |
Specifications
| Brand | Caldera |
|---|---|
| Model | Caldera FN-3991 Pro |
| Size | 120 × 120 × 25 mm |
| Speed | 200–1,700 RPM (PWM) |
| Airflow | 57.8 CFM |
| Static pressure | 1.87 mmH₂O |
| Noise | 31 dBA |
| Bearing | Magnetic levitation |
| Connector | 4-pin PWM + 3-pin 5V ARGB |
| Rated lifetime | 150,000 hours |
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Cite this page: Hardware Spec Index, “Caldera FN-3991 Pro 120mm PWM ARGB Case Fan (3-Pack)”, https://vextor7.com/item/16940928 (accessed 2026-10-26).