I got one (EPIAm9000) and it is a nice little board. It runs pretty comparably to the Celeron 700 I had in my other system.
I set it up originally in my cabinet with the tv-out, onboard sound, 256ddr. It ran adequately for most games, but the video was a little wonky when I tried using hardware Stretching thru mame, real fuzzy around the edges.
I've since pulled it and have it as my regular pc for now. Whenever I get around to a new board for the cabinet I'll shuffle around and the Epia will be going into a media PC for divx/mp3 and I saw a suggestion to add an Atari2600 emulator