I'm running a used Dell Optiplex 780 I got from an industrial liquidation sale for $10.Per usual it needed a hard drive which I scored on e-flay loaded with Windows, chrome, and a bunch of applications for $29. So far its been awesome, my friends roll their eyes with jealousy every time I look up parts or torque specs for whatever is on the lift for the moment, while playing tunes on youtube or I Heart. I dare say the electric recycling bin at the dump may even have some decent, older desk tops simply in need of memory and a hard drive.