Iwill demoed a protype of the world's first Small Form Factor 
dual-Opteron PC in this year's Computex Taipei.  Now you can play with 
the real thing at the Linux Cafe PRONTO ("Gateway to the Open Source 
Community") in (where else?) Akihabara.
http://www.watch.impress.co.jp/akiba/hotline/20040911/etc_zmaxdp.html