RAM requirements aren't really additive but you'll want to overshoot a bit if you will be using many tools simultaneously. You also have some optimization that happens in your DAW that usually helps balance things out (and that's not including the ability to do things yourself like freeze tracks or print them to audio tracks).
16GB would be the recommended minimum in my opinion. Even on a laptop (the M1 MacBook I'm using to type this has 16GB RAM and even with the new architecture allegedly making more RAM not as important for some tasks I'm happy to have it and feel it performs well).
For processors I tend to agree on at least 6-8 cores like this article states, I'd lean at least i7 (I'm not an AMD fan, but I'm sure they are capable):
https://integraudio.com/what-pc-ram-cpu ... roduction/ You should try to get current gen if possible but it doesn't have to be top of the line. When I purchased my gaming PC a couple of years ago I went with the current gen i7 and my wife went with i9. I have no regrets, hers was just a build that happened to have an i9 and didn't cost much more. In that situation video cards were the important consideration and we both chose the 2080 which was near the top of the line at the time (but the ti version was way more and out of our budgets). These machines still perform amazingly for gaming and mine is great for music too. It isn't my main home studio computer (see below) because that one is tailored for music so it has more cores, more RAM, and a video card that's geared toward "production" tasks instead of framerates.
Of course my home studio machine has 96GB RAM and 24 cores but that's another story as I do need the headroom for hundreds of tracks and 24 channels of analog input/output
It is an older machine, though, so those specs sound impressive but you could get a current-gen 8 core machine with lots of RAM and do really really well too if you wanted a powerhouse.
