I finally retired my old Pentium Pro machine a week or so ago when I built my girlfriend one of those shuttle SFF systems. I bought it I believe in '96. Came with a 3.2G HD, I later added a 6.4G one. Always run fine on 64Meg of RAM. 4mb 2d graphics and a 12mb Vodoo2 3dFX card. Came with win95 and had win98 first and second editions. The 6.4 HD started to fail so I decided to just replace it with a new system rather than fix it. With a memory upgrade, it probably would have supported XP (it's well above the specs for Win2000 Professional).

Pentium 60 was the first pentium chips, I used to have one. It finally stop seeing use only a year or two ago.