I run a pimping MZ-80, overclocked the Z80 chip inside, and got 32KB of RAM clocked at 66Mhz. Comes complete with a 3KB monitor and a tape drive I added on.
Awesome! I learned with the 8088, 8086, 6500, 65000 and the Z-80!! In class we worked with Kaypro 4's. Built our own microcomputers based on the Z-80 in school (wire-wrapped!). Also did a 6500 system with assistance from the AIM-64! lol
My ride? http://pcpartpicker.com/p/DvdjCJ