AMD leads Formula 1 supercomputer championship
 

If you are looking simply at the number of cores, Intel is in a disadvantage, since Itanium 2 processors are still used by some teams. The 2009 Supercomputer championship, however, could be very interesting, since Intel will roll out its Intel Nehalem architecture. At the same time, AMD will the Shanghai and the Montreal 8-core, all using today’s socket, which means that interested teams might end up with their 1024 or 512 socket system having 4096 or 8192 cores - without a change in infrastructure.

http://www.tgdaily.com/content/view/36905/135/