I have my ROON core on a piece of junk. It does not matter in my case because I have done what someone already posted on this thread. Use fibre optic before the DAC and you will not get hit by the nasty sonic gremlins of bad this or that. It don’t matter if you use fibre before the DAC.
My ROON core is on a cheap $500 Dell that I got about 6+ years ago. This machine has no mouse | keyboard | monitor and resides under a bed in my guest room. Why, because it is a bit noisy and a piece of junk. It does not matter about using such junk if you use fibre.
I am ROON all the way and my streamers ONLY work with ROON. It was cheaper this way, and I have no intention of using anything but ROON.

