Man, my first homebuild out of college was an absolute monster with 8MB of RAM so I could run NT at home. $640 just for the memory. I did cheap out on the CPU and only got the 75MHz Pentium, though we ran 90s at work. Wing Commander III was awesome on that thing.
Would have been circa '94. My build was definitely up in that range, possibly without the monitor. I'm also certain that my HD was measured in MB; might have been either a 250 or 330.