If you have a purpose built PC meant only for streaming, then it should be fine. I am using a PC that is passive cooled and it is couple of huge steps over the dedicated laptop I was using earlier. Please see my system page for the build I did.
I agree that Fidelizer will make a very noticeable difference. What is your playback software? You mentioned Tidal. But unfortunately they do not have a control software, to control the playback on the PC. You can use Remote Desktop to control playback of Tidal directly from the PC though, if this PC is on the audio stand away from where you sit.