The TechZone has a review of the Shuttle XPC SD31P up.

Today, we get a chance to look at Shuttle's latest, the SD31P. This new Shuttle XPC features all of their latest innovations in cooling and chassis design including the latest Intel Chipset, Dual Core CPU support and 64 bit hardware and software support. Can the Shuttle SD31P really take over the job of my big honking desktop system?

Shuttle XPC SD31P Review