"discrete graphics class performance with the efficiency of integrated graphics"
Excuse me, but I seem to recall that, if we ever needed discrete graphics in the first place, it is because integrated graphics were shit in performance.
It used to be the case that if you were using integrated graphics, it was because you were working on a server and the only thing on screen was the console - text version. Integrated graphics were good enough for that, but not much more.
These days I acknowledge that integrated graphics can actually show a Windows GUI properly, without much in matter of lag, but if you think that you're going to persuade me that your integrated graphics can boast of GeForce RTX 30-level performance well, I'm sorry, I'm not drunk enough to buy that.