Hi folks,
A site which shows the top 500 of the most powerful supercomputer sites in the world. Of course, these are Linux sites, Micky$oft is nowhere to be found.
One site, in antarctica, boasts 1500 nodes of rack mounted Compaq servers of modest configuration. These are "parallel processing arrays" meaning the complete node is dedicated to one task. It would take 35 Cray1 supercomputers to duplicate this amount of processor power. These systems do many things from Geological, weather forcasting and financial forcasting.
I hope you find this interesting.
http://www.top500.org