At work at the time (I was an intern), in 1993, we ran SCO Unix on a 25 MHz 386sx with 8 MB and another 6 MB on an add-in card on the ISA bus. And while the compilation with Motif was a bear (1 hour for a 1 MB executable), the actual app was reasonably snappy.

I can't imagine how FAST that system would feel with modern hardware.

To quote Scotty: "we going nowhere mighty fast."

Motif? What version of SCO UNIX?