Built this weekend. 3/4" MDF, a bit over 6' wide and 3' deep. 33" on the far end, 30.5" by the LCDs, and 28" on the keyboard area. Keyboard area is 4' wide and has two 2' deep panels overlapping with space between. Works good for storing secondary keyboards and mice, etc. Put a couple holes...
Celeron M 410 1.46GHz
1GB DDR2(2x512MB 667@533)
MSI Fuzzy GM1 - i945 chipset
2x500GB Maxtor SATA drives
Rosewill SI 3114 RAID card
Inwin/Powerman 240 watt PSU
~9" square. Maxes out at 60 watts, silent except for occasional spazz attacks of drive thrashing. One of these days I'll finish...
Pardon the mess on the desk, it's my default drop point.
Dual 24" Soyos on the bottom, 20.1" Dells on the top(2005FPW on the left, E207WFP on the right).
The Soyos are on my main PCs, the Dells on this. The screen saver is a cliche, but for this setup I had to.
Excuse the mess on my desk, I need to sort and file again.
The quad version of the dual mount. Gives you a second set of arms and a longer central pipe. Those are 24" Soyos on the bottom, 20" Dells on top. There's another ~1.5" of the pipe under the skull, so by my measurements I could...
http://www.commell.com.tw/Product/SBC/LE-370.HTM
http://www.commell.com.tw/Product/SBC/Le-364.htm
Expensive and requires a special riser card, but small. There are two risers available, one that goes opposite the board, and a second that puts the PCI slot over the board.
You could also...
If a mini-ITX Via setup an do it, so can one of these. Only difference is the form factor. I've got a FreeNAS box based on a similar board, was only serving a handful of PCs but I never had any issues.