The more interesting metric is running HL2 on Pi4, Pi5 and 3588:

Pi4: 20 FPS same when using ffmpeg to stream to twitch. 5W

Pi5: 40 FPS idem as above. 10W

3588: 300+ FPS and rock solid 60 FPS streaming to twitch. 15W

So 5090 is not even interesting for gameplay. More polygons and larger textures do not make games more fun to play.

AAA has peaked and C++ does not even deliver interesting games any more. C#/Java are way better alternatives for modding.