Shuttle SD39P2 Barebone
 

Shuttle is pretty much synonymous with small form factor PCs, which is
hardly surprising considering it created the genre. The SD39P2 is billed
as its flagship machine – it supports Intel socket LGA775 dual-core and
quad-core processors including the top-end Core 2 Quad QX6800. Add-in
support for up to three hard disks, including RAID 0, 1 or 5 and the
ability to take a dual-slot graphics card - even a GeForce 8800 GTX, and
you can see that it has the potential to be an incredibly powerful
machine for either gaming or workstation use.

http://www.trustedreviews.com/pcs/re...P2-Barebone/p1