At least on my Gen8, most of the noise comes from the 1U-size power supply. I swapped that out for a PicoPSU with an external solid-state power brick and now yo

At least on my Gen8, most of the noise comes from the 1U-size power supply. I swapped that out for a PicoPSU with an external solid-state power brick and now you can’t hear it at all unless you put your ear right up next to it. (Well, the power brick that comes with the kit has a high-pitched coil whine that you can hear when it’s quiet, but it’s just an ordinary 12v supply so you can replace it with a better one if that’s a problem.)