Comment by Brybry
I believe most consumer CPUs only have 2 memory channels w/ 1 memory controller so unless they're using 64GB UDIMMs (which I believe do exist as of this year) then gamers seem limited to 64GB total ram (2x32GB) unless they want to drop their ram frequency.
For example a 9950x3d officially supports 2 sticks at DDR5-5600 but 4 sticks at only DDR5-3600. [1]
I had a friend run into this issue on AM5 when he was trying to use 4x32GB DDR5 on his gaming PC.
[1] https://www.amd.com/en/products/processors/desktops/ryzen/90...
There have been 48GB dual-rank DIMMs for about two years now, so 96GB using two slots and operating at high frequency has been an option. But even 64GB is still somewhat overkill for a gaming PC, putting you more into workstation territory.