Frequency Plots
| Fan Speed (PWM) | Peak Frequency |
|---|---|
| 5% | 630 Hz |
| 10% | 630 Hz |
| 25% | 800 Hz |
| 50% | 630 Hz |
| 75% | 1.6 kHz |
| 100% | 2 kHz |
5% Fan Speed
- Peak frequency: 630 Hz
10% Fan Speed
- Peak frequency: 630 Hz
25% Fan Speed
- Peak frequency: 800 Hz
50% Fan Speed
- Peak frequency: 630 Hz
75% Fan Speed
- Peak frequency: 1.6 kHz
100% Fan Speed
- Peak frequency: 2 kHz
Signal Recordings
I’ve recorded the signals shown above, but please note that I’ve enabled Automatic Gain Control (AGC) to facilitate their reproduction. The provided recordings are intended for aural identification purposes only.
5% Fan Speed
10% Fan Speed
25% Fan Speed
50% Fan Speed
75% Fan Speed
100% Fan Speed
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And again, the Alphacool Core 4000RPM 120mm is not only 3 times cheaper than the Noctua NF-A12x25 G2 but also better as a radiator fan.