An AMD K7-600 with 128MB of RAM and a 5400 RPM HDD running Windows NT 3.51. This was a machine from the year 1999-2000 with an OS that was about 5 years older than it. Hardware was experiencing really fast improvements back then, particularly in CPU speeds, and you were kinda expected to keep up with the 2-year upgrade treadmill or suffer from incredibly slowness. All this is to say that this machine was indeed overpowered for the OS I used.