iMil

CNS means Chipset not supported and I doubt it is the case, are you sure you are using the patched nvidia module? modinfo nvidia to check which one is loaded

Good call, I really hesitated between the X570 and the X99, are you using P2P?

I am actually surprised with the power draw, the box itself idles at 20W, which already amazes me for a Ryzen; when computing, I barely pass the 600W bar, and as I am not really using it to vibecode an entire system, I don't even notice the spikes on the power monitor (Shelly + homeassistant).

2xRTX5080 would be awesome. You'd only be able to run a q6, which it's already pretty good, but moreover you'd be able to use P2P and use Blackwell full speed, which I can't.