I had two faster (Pentium 3) machines but firing up my dad's old Pentium 90 running redhat that I installed to use KDE to write C was just a beautiful feeling and really got me coding for a few years.

Even games were at least partially open (quake) or easily moddable (command and conquer, tribes, etc.) so I went down that rabbit hole soon after.

Also man I really miss BeOS.