RM750x Shift coil whine at idle

[GabryxJ]

Hello, i've recently bought the Corsair 750 RM750x Shift. It has zero RPM fan mode, so the fan doesn't spin at low load. Still, the PSU emits a continuous noise, not sure if coil whine, i've uploaded a video here. It's not very loud, but when i'm just surfing the web it's very annoying.
Using task manager i noticed the noise stops as soon as CPU usage surpass ~10% and start again as soon as it decreases under that value.
The same happens when GPU usage surpass ~5% (even if CPU usage stay under 10%).
So i suppose the noise occurs when the PSU usage is extremely low compared to max capacity (750W). CPU is Ryzen 5 5600G (65W) and GPU is RX 7800 XT (263W). I use a power strip with EMI filter.

Should i ask a replace?

[faelv]

I have a very similar problem with my RM650: https://forum.corsair.com/forums/topic/192221-rm650s-strange-behavior/