Ye olde XT I had topped out with 640KB of RAM, a 20 megabyte and 15 megabyte MFM drives (ST-225, ST-419), two power supplies (the big full-height 15-meg drive needed extra time to spin up), one 16550 serial port card, no mouse, a SoundBlaster 1.5, a clock card, and a 2 megabyte EMS expansion card (with 72 individual DIP chips on it)....with a 10MHz 8088.
Weird times.
Eventually, someone donated a board with an AMD 386SX-33, which I immediately overclocked to 40MHz. Things became a lot different after that.
