Such a throw back, I built a hackintosh back in x86 days and had it mostly working for a year, but of course tried to apply an update (10.08 I think?) and it blew up.
Ended up selling the hardware to some guy who insisted he would get it working and I am sure it was possible, but I pretty much switched to using Mac after that as I loved the dev experience.
I ran OS X on a Dell mini 9 for two years while travelling. Other than sleep, it was excellent.