I have a "special" relationship with a local charity (
http://kramden.org/ -- they take donated computers, mostly corporate donations, and refurbish and give them to low-income students without a computer at home)--computers that they don't want and would otherwise be sold for recycling I buy at bargain-bin prices. This HP, they decided, wasn't a good choice to refurb to give out to the kids, and the particular one I bought (dual-core + case damage) wasn't worth refurbishing to actually sell as normal.
That's where I get things like the gaudy Apevia case that I have the dual-X5672 in or other miscelaneous stuff (older PSUs, small HDDs, etc).
EDIT: When I bought mine, it had the worst CPU it supports (dual-core no-HT), 2GB RAM, no HDD, and no GPU....so it required a bit of work to get it into worthy state.
EDIT2: And the OS is "TPB Edition"