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Noctua NF-A12x25 PWM vs Noctua NF-A9 PWM: Comparison
Noctua NF-A12x25 PWM and Noctua NF-A9 PWM separate most on airflow: Noctua NF-A12x25 PWM at 58, Noctua NF-A9 PWM at 46.4, 20% in favour of Noctua NF-A12x25 PWM. Static Pressure splits them by another 3%, again favouring Noctua NF-A12x25 PWM. They match on max speed and pwm control.
Specs
| Specification |  |  |
|---|---|---|
| Fan Size | 120 | 92 |
| Brand | Noctua | Noctua |
| Model | NF-A12x25 PWM | NF-A9 PWM |
| Bearing Type | SSO2 (150,000hr rated) | SSO2 |
| Lighting | None | No RGB |
| Static Pressure | 2.34 | 2.28-3% |
| Max Speed | 2000 | 2000 |
| Noise Level | 22.6 | 22.8+0.2 dBA |
| Airflow | 58 | 46.4-20% |
| PWM Control | true | true |
Verdict
Noctua NF-A12x25 PWM
9 / 10 Expert Rating
The reference benchmark for 120mm fans — best-tested all-around performance and quietest in its class, with class-leading bearing longevity.
Noctua NF-A9 PWM
8 / 10 Expert Rating
The go-to premium option whenever a build genuinely needs a 92mm fan instead of 120mm.