chances are you already used the external nvidia kernel module prior
the dkms package is just the “catch all” way which works on most setups
(at least on Arch Linux)
it doesn’t matter if you use paru, yay or heck makepkg if you are compiling packages with hilariously large sources like for example webbrowser (librewolf, brave, ungoogled-chromium, firedragon take each like ~30 GB) without pruning the build cache afterwards
afaik linux and windows shows different GPU memory clock speeds but it’s basically the same (1:2 conversion)
most likely because bigger number = better?
the most honest reason I read about is probably that former Twitter user who felt out of place on Mastodon or other Activitypub servers because the “Nerds” who care about privacy and decentral systems which were already on it have a different microblogging culture and they didn’t want adept
so now a new competitor gets traction because the people who felt out of place on Mastodon can relife the Twitter experience from over a decade ago
the fake exclusivity even make you feel special despite the lack of features
using external kerner driver (“out of tree”) come with caveats you need to take care of
typically most linux distros will do this completely transparent but certain usecases will be more complicated
espcially if you install packages outside of your linux distro repository like a newer kernel version or an older Virtual Box version
if you just need software to set up virtual machines you might look into Gnome Boxes or virt-manager which don’t require external kernel modules like Virtuap Box to work
anyway these issues typically happen on Ubuntu based distros (like Linux Mint) because your linux kernel is to new for the Virtual Box version (or the Virtual Box version is simply too old)