I would mainly do this to provide stability. I am getting tidal drop outs with MQA. I did change the DNS server yesterday and it appeared to help, but not 100% sure.
Hang on - your post title says you’re considering the NUC8i7BEH, but the link in your post is for a NUC8i3BEK - in other words, instead of the taller NUC enclosure (that can hold a HDD or SSD for your local music) with an Intel Core i7, your link is for the slimline enclosure (that cannot have an additional drive installed), and which has a Core i3 CPU.
If you are going to use the NUC with ROCK, then you can use the Nucleus and Nucleus+ specs as a point of comparison. The Nucleus has a Core i3, and the Nucleus+ has a Core i7.
Your current library of 1k albums would be easily handled by either - but think about how large it might grow to over a few years (streamed albums added to the library also count).
How many zones do you envisage, and will you be doing lots of DSP?
Your answers to these questions should help you decide…
Before investing in a NUC, perhaps it might be worth investigating the cause of the dropouts. Why do you think they are related to your current Core, rather than your network setup?
The first thing Dylan will want to know are the details of your current Roon and network set up, and you should post it in the Support category of the forum, not here in the Roon Software category…