But it feels really good to have more ram than you can think of a use for.
I have a faint memory of an interview ages ago with Knuth I think where he mentioned as an aside he was using a workstation with 3.2 Gb of storage and 4 Gb of ram :)
I was young and dumb and never would have guessed I'd own a computer with 32gb of RAM that felt pitifully underpowered for today's tasks.
I was constantly constrained by my computers back then. Trying to navigate complex scenes or model very detailed meshes could get soooo slow. But man I loved it so much.
Probably because it ran Maya. Which was a SGI product back then, not an Autodesk product yet.
Back then Maya seemed like this unobtainable, magical machine for producing impossible imagery. When I finally got my hands on it, I was so disappointed to realize I still needed skills to make it do the cool things. I was ~16 and pretty clueless. I just knew Maya was used for the crazy stuff I was seeing in cut scenes from games or special effects in movies.
I was much faster in 3ds max than my artist friend. But I was modeling cubes and he was ... actually modeling fantastic creatures and landscapes. So I stuck to programming and other text based activities and he's usually 'visual FX lead' in the gaming industry :)
https://appleinsider.com/articles/26/03/06/forget-512gb-ram-...
You may want to hold on to your M3 Ultra! There's no guarantee there will be a M5 Ultra with 512 Gb ram.