while nowhere near as cheap, intel is now selling non-atom versions of the compute stick.
having said that i'm running my imaging rig on the atom-based compute stick with no problem. 2GB of ram, 32-bit windows home, ascom, sequence generator pro, astrometry.net, etc. clearly PI won't run on that hardware, but right now i am successfully doing image acquisition with this device. idle consumption: 2W.
rob