The 2003 machine in post #10 ran 3 large CRT screens from two graphics cards (one PCI). It had an IDE C: drive and a U160 scsi array with three disks.
The processor was an overclocked thoroughbred.
It was used mainly for coding software for analysis of a data acquisition. the 'pogo' stick in the picture had an accelerometer attached and was tapped with a hammer to produce a signature waveform which was captured and run through the programs being developed.
The field app was to determine loads in mine roof bolts by impacting the end of the bars with a solenoid device.