NVidia and ATI both had the same problem and for better or worse ended up using the same solution. ATI was first with the scheme and NVidia copied it not long after. Thankfully they started at totally different places in the "generation number" but they've wrapped around and overlapped.
I wonder if NVidia will start reusing their own numbers, like is there going to be a Geforce 4200 next year?
The number system wants to make sense but it's not exactly been a big success. I'm not sure how it is today, but last time I shopped for a video card, I quickly became aware that only a fool walks blindly into a store and tries to figure out what to buy based on the model numbers.
You still have to spend hours doing research in order to make the decision intelligently, so they might as well just call them any random string of letters and numbers.
They could just literally give the cards names, like "Dexter" and "Biff" and "Lando" along with a cool picture of the character on the box. Put some silkscreen artwork on the card to match. Hell, why not. Next THG thread "Wut card 4 fFortnite - Chewbacca or Bumblebee?" "Both cards suck get Rambo Ultra dude."