Get it right
Actually many of you guys doubting this stuff are getting it completely wrong.
The Azul hardware is great kit. This is nothing like the Java chips that Sun and other were working on. These are chips designed with a instruction set applicable to any VM environment - so not just Java - just there's only a Java client available at the moment. I speculate, but perhaps they'll release a .NET client at some point??
Anyway the key thing is that we evalauted one of these and found it would give us a HUGE amount of scalability in a small, easy-to-install and VERY VERY data-centre friendly format. We estimated each 5u unit was roughly equivalent to about 25 of the quad core app-server boxes that we currently use, or at least for the web app we tested!
Also from a virtualisation point-of-view these are great - you can back all your web-sites with Azul and deal with spikes in load on one site seamlessly by using spare capacity. Far more effective and dynamic than trying to pre-allocate set numbers of servers to each site in advance.