How to stop the Jonsbo CR-1400E from humming?
That low-frequency humming during stealth sections was absolutely grating and completely killed the immersion. I realized the Jonsbo CR-1400E ARGB Black Edition was hitting a frequency jump between 40-50℃, causing the RPM to bounce wildly between 800-1200 RPM. I tried the BIOS 'Silent' mode first, but that was a mistake—CPU temps spiked to 88-92℃ and the game stuttered during map loads. I decided to take manual control and locked the PWM duty cycle at 45% for the 40-65℃ range, adding a 3-second hysteresis delay to filter out those annoying temp spikes. Now, the RPM fluctuation is barely 50 RPM and the core stays between 72-76℃. I actually set the delay too high at first, and my CPU nearly hit the thermal limit during a burst load, but 3 seconds is the sweet spot. Noise dropped from 38dB to 29dB, and the case vibration is gone. Stress tests confirm it's still cooling fine, with RAM sitting at 58-63℃.
