2011-04-20, 16:55
Have you tried overclocking the Atom you already have? I also don't see why the Zacate boards wouldn't work for XBMC, I've read several reviews on Newegg of people using them for this.
EDIT: Have you tried turning on debugging so you can see CPU usage while you're going through menus while also playing content?
EDIT: Have you tried turning on debugging so you can see CPU usage while you're going through menus while also playing content?