Relatively easy to understand optimal input on dacs, not so easy with the computers serving dac. First off, servers and streamers both computers, and it is the rendering service they provide that makes all the difference in obtaining maximum potential from dacs and streaming chains. Servers or one computer setups may or may not provide optimized rendering, many run rendering ports directly off motherboards, not good since these motherboards must run many processes allied to music players and OS, the more processes run the more noise produced, not good. The streamer has very little to do in comparison to server, motherboard runs very elemental OS, with focus on rendering, which means nice power supply and good clock. Servers very rarely provide this level of rendering, the few that do are easily $10k plus.
Get a nice streamer, server becomes much less important, not saying still not important, only less. In order of importance, dac, rendering, server, network.
There is one other way around two computer setup, streaming dac. Assuming quality rendering within dac one only needs to concern oneself with server.
I'd agree with those stating general service computer doesn't belong in quality streaming setup. There are means and paths to go diy through self builds and modifications of off the shelf GS computers, but one needs computer savvy. Add up time spent gaining knowledge, actually performing mods, expertise to carry out those mods, parts needed for these mods, Nope, vast majority better off getting off the shelf servers/streamers.