Hi Keith,
the particular board I'm using is UMB-D255E1 made by UNIGEN in Taiwan. The reason I bought this particular unit was that there
was a local supplier (New Zealand) and was able to offer a runtime licence for Windows 7 Embedded Standard as well. By choosing
this supplier I ended up paying WAY above what I might have done otherwise, about $750US for the board, RAM, SSHD and the licence.
Having done more research since I realise my mistake, or if not mistake, the premium I paid for a one stop buy. The price aside the
platform has run flawlessly ever since and the pain of paying a bit much fades as more and more chips get made.
As a starting point try Mini-ITX.com.
They sell boards by a number of well known makers, the one which is almost identical to the one I'm using is
D2500HN 1.86GHz Fanless Dual Core Atom Mini-ITX Board (Intel ODM) at $85US
My board has one SATA port and the other being configured as mSATA in which goes the SSD, brill! I used the SATA port only when I
loaded the OS from an optical drive.
Any search on the net will find such units and it seems that about 20% of them offer a built in PP. I didn't bother with the socketed versions
for Celerons etc because as you point out CPU power has very little to do with how Mach3 on PP runs.
Craig