Thanks. It looks there are reasonably priced mini-ITX boards that support Skylake Xeons (a note to this that are considering this: v5 E3 (Skylake) use the same socket as Cores, but need a different chipset).

The 80W TDP worries me about though, cooling, noise and money/pollution wise (the extra 45W make around 400kWh/year).

Considering the CPU will be idle most of the time, do you have figures about the actual idle consumption of an E3 based machine?