In the process of building one of these now... I went for the regular P5B mobo, and with an ASUS en7600gs video card (silent fanless card with big 'ol heat sink) I 'm still able to fit a 9652 Hammerfall, UAD-1, and Wireless network adapter in there to make use of all PCI slots.
By the time I had called it a night I had put everything together, formatted the drives, and installed Win2003 Server and all hardware drivers... Tonight I'll throw on the DAW software and get a real feel for what it can do. Judging by the speed in which the OS was installed and the lightening quick bootup/shutdown times, its looking to be a monster!
I must also say I'm impressed with 2003 Server as well... I kinda expected this heavyweight, bloated app... But so far, with no tweaks, it seems quite fast and efficient out the box. Doesn't seem to be alot of overhead in terms of extra services eating into my CPU cycles. And best of all, after \"Remapping Memory\" in bios, Windows SysInfo shows 3.947 gigs of memory installed and available! Try that in XP...
--Asus P5B, Intel e6600 core 2 duo, UAD-1, Hammerfall 9652, Asus en7600gs vid card, 4 gigs Corsair CL4 RAM, Windows 2003 Server...