The resolution of the originally Xbox managed to fit decently into a CRT while also being known for having "monstrous" capabilities at the time compared to the ps2/GameCube.

Was it the 360 that started having HD resolution? I remember it used to make me made when the text was too small on a HUD because of it.

Technically, the original Xbox could output 720p, but realistically, no retail games on an unmodded console were outputting at that resolution - even many early Xbox 360 games like Halo 3 were below 720p.

That might be an interesting thing to look up sometime. It connects with tv and film, too.

It's basically like with the ps2, there were some ps2 homebrew titles that I remember seeing on YouTube that did something related to 720p, but most retail games didn't fully utilize that. The original Xbox for the most part, (maybe there might be some obscure exceptions) the games would actually show up nice and crisp on a CRT at either a native or close to native CRT resolution, with better graphics then the ps2 and GameCube.