So far, the list makers of streamers that are also servers and can work as a Roon core includes the following:
• Innuos
• Antipodes
• Grimm
• Small Green Computer (2 components)
• NUC (e.g., Asus) - not a streamer; DIY
• Baetis
• Pink Faun
• Wolf Audio Systems
• Lucas Audio
• JCAT
• Rockna Wavelight
@mapman the link below by the Gabster channel on YouTube nicely shows how to make a NUC for use as a Roon core/server. I believe NUC DIY folks try to use a tall version of the Asus NUC pro with an i3 chip or better, with a fanless case (e.g., Akasa). However, if a more powerful chip is used, more heat is generated, perhaps making the fanless option more challenging to execute. With the NUC, its necessary to get RAM, another small memory card,and a SSD:
Intel Nuc https://amzn.to/3r2ZKGX
Crucial 8gb ram https://amzn.to/44w6ZGl
Evo 250 GB M.2 https://amzn.to/41cntRl
1TB SSD https://amzn.to/42yM3gl
Gabster's YouTube 3-year-old video is at:

