I think this is the first time Tyan has made a 4p intel board... before it was mostly supermicro/intel for socket 604/1567/2011.
Tyan did make 4p/8p AMD boards + systems though ...
Not sure who makes 4p board for HP/dell and IBM..
I think i might have an older bios.. msg me if you still need it
Over all I really like SM boards, now they have a 8 socket xeon 1567 system.. talk about 80core supercomputer under your table ....agreed it will cost you an arm and a leg :)...