bit-tech.net take a look at the SD37P2 - the first Shuttle XPC to support Intel's Core 2-based dual/quad-core CPUs.

When you consider that Shuttle's XPC product line is the standard-setter for small form factor barebones, you are unlikely to find an equivalent to the SD37P2 elsewhere. There are some limitations that you have to take into account before you consider buying the SD37P2, but then drawbacks are expected when you're packing a lot into such a small space. Even with these shortfalls, the SD37P2 would definitely be on my list if I was building a Core 2-based SFF system.

Shuttle SD37P2 Review