The Register notes that Via has released a 1GHz C3 processor-based Mini-ITX motherboard/CPU combo. My Via Eden Mini-ITX is still chugging along with Red Hat 8.0, though the built-in nic burned out a few months ago. For more CPU-intensive stuff I can see the 1GHz C3 rocking. Of course, for massive horsepower, the Shuttle stuff is top notch.
It also looks like this version has a heatsink/fan combo, whereas my Eden is silent with just a heatsink. It doesn’t make much of a difference though, given the drone from other machines running in the background…