Of my own, this one (in it's current version), makes number 6; all together (counting ones I built at a science lab), I probably have built over 400 desktops and about 200 laptops, and about a dozen or so rack-mount servers
Until I played one of the Carmen games from 1995 with Lynn Thigpen, and I found a note left behind from one of her agents, I didn't realize that Carmen pays her people too Lol