This is crazy to me as well: half a terabyte (!) of RAM?! How is that even possible lol (I know this is possible, but seems totally overkill, even though I know LLMs eat RAM for breakfast)
The last Intel Mac Pro could take 1.5 TB of RAM iirc.
These are very well-suited for running local AI models, which must be held in memory, and are very large.
Nobody is buying these to write Word docs and play MP3s.