bit-tech.net has posted a new review of the Shuttle SN25P, a NForce 4 small form factor system supporting Socket 939.

Regardless of the fact that the Shuttle SN25P does not use the Ultra
variant of the NForce 4 MCP, we see it can perform as well or better
than any full ATX board out on the market at the moment. With the
extra accessibility of being able to use graphics cards with dual
slot cooling solutions and up to three hard disks there's never been
a better time to throw away your huge ATX rig and opt for a small
form factor PC.

Shuttle SN25P