We change the hardware once in a while while keeping the specs listed on the page stable. Those specs are the ones that matter. Also, competing on hardware spec is not something we care to do because it doesn’t take into account software.
For example, if you have server A and server B (both for running Roon) for the same price and mostly the same specs, but one has 16GB RAM and the other has 8GB RAM. Which is better? The answer is: neither, they are both the same because Roon won’t use the extra RAM.
Another reason is the mismatching of specs. The Nucleus would hit CPU limits if you increased RAM. The Nucleus+ could use a bit more RAM without hitting CPU limits, but less than 1% of our users have libraries so big that they can benefit from it.
Another example from a different world: for years, Samsung phones have out-spec’d all Apple iPhones, but anyone (including me, an avid Android user) will tell you that the iPhones all feel like they have better specs. It’s because iOS is tuned to make it feel great. Software decisions in iOS, like little-to-zero processing of backgrounded apps is the big reason why RAM is far lower than on all iPhones compared to flagship Samsungs.