I did see this benchmark. For a consumer CPU, it looks pretty good. Looks like 46.3 minutes.

https://youtu.be/72AHENDeTEI?t=892

I guess it's actually pretty good for any CPU class.

Or: “how many milliseconds does it take to echo a keystroke in slack”?

I believe top-of-the-line Threadripper compiles Chromium in 30+ minutes.