I could see ARM processors really threatening the server market. Do you know how much power is used in a typical data center?

In fact Smoothstone just raised a lot of funding just to pursue this: http://www.smoothstone.com/

Also with increased virtualization you have beefier and beefier single servers running 100's of servers / desktops. Imagin running your entire VDI estate on a single 16 core blade powered by ARM processors that uses as much power as a single desktop, can you smell the $$$