I'm placing an order on Newegg with the goal of putting together a fairly high-end box for under $1500 for my friend. I opted to go for an AMD mobo and CPU (of course) and assembled a setup that seems like it should work perfectly. All the physical dimensions should work with the case size, and all the components should be compatible. I'm tentatively planning to run Windows 7 Ultimate 64-bit.
As this is the first time I'm actually building a computer, I figured the first thing to do would be getting random feedback from the Internet. So I would love it if anyone who sees a problem with this setup would chime in with their two cents, or let me know if there's anything I've left out. My shopping cart looks as follows:
Little overkill on the PSU a quality 650watt PSU would run that system just fine with two HD5850 in Crossfire. I would have opted for HD6870 over the 5850 but since the ones in stock are more expensive (counting in the MIR) not a big deal.
We have most of these boards paired with 955s BEs, and 1 with a 1050. The rigs are used for gaming/design, and they're very solid. I'd call them the high end of middling.
Word of caution, though with the Thuban and that board. It's probably not an issue any longer, but there are some earlier revisions that don't play nice with the hexacores. Unless you get unlucky (like I did) and get old stock, this won't be an issue.