But if your going to drop this much on a system, you must be using heavily multi-threaded apps.
Which it would then probably work out cheaper to do a 4way quad opteron system.
There is already 2-way amd server boards that have SLI support.
What I'm trying to say is this makes no sense for almost any app most people here use.
And if it DOES make sense and someone needs the power, they are better off with a 4-way AMD setup.
EDIT:
Here you go, you want the fastest money no option system, buy this 4-way tyan board, slap 4 quad core opterons in it, and it already supports SLI.
No need to wait for this, and it will be faster. Either way both the skulltrail and this is unneeded, but to say the skulltrail is the fastest with SLI or anything of the sort is just false.
You want a fast but usable system, just stick with the regular intel quads.
http://www.tyan.com/product_board_detail.aspx?pid=554