That’s basically my question. Rev B is smaller but what are any other differences? Roon sells the Nucleus at $500 but I’ve seen Rev As closer to $1000
Primarily a different case design. Rev A is more constrained in the physical size of the optional storage drive that you can fit inside it. There may be differences in the motherboards used, but I am not certain about that.
Both Rev A and Rev B models are no longer manufactured. The current model are the Nucleus One and the Titan, and they have more modern motherboards fitted. See:
I had a Rev B at one time. Then a Nucleus One. I have a 2,5 inch Sata extra drive, Drive is 8tb. Is that spported on the Rev A?
How thick is it? Look in the manual link that I gave you. The answer is there.
The Rev. A was based on a NUC with intel 7th generation processing.
The Rev. B was based on a NUC with intel 8th generation processing.
The latter had more cores but not necessarily more single core performance so they were pretty much on a par performance wise.
Obviously 7 and 8 gen processors make them quite old. The Nucleus One effectively replaces the Nucleus non plus while the Titan replaces and rather eclipses the plus versions of the older devices. However for rock (!) solid stability of the sort where you can go many months between re-boots those older models are hard to beat.
That was true for the Nucleus Plus. It got a processor change/upgrade in the revision. The regular Nucleus did not, sticking with the i3-7100U.
AJ
The Roon Nucleus is a nice metal fanless case. The Nucleus One is a plastic case with a fan.