Check these out -- looks interesting ...
http://cgi.ebay.com/IBM-JS20-Blade-Serv ... 4ceeb586de
http://cgi.ebay.com/IBM-JS20-Blade-Serv ... 4aa02ea74f
I could get one for $50 including shipping -- just need to add RAM and HDD -- but I wonder what else is needed? Can you run one outside the chassis? Sure would speed up compiling things, at least ...