Sure, you may have already checked out the Steam Machine prototype machine, but that won't be the only hardware configuration for the device. Valve is still gathering hardware partners for their devices and are poised to announce who these partners are when CES 2014 rolls around.

Valve's Greg Coomer spills the beans.

In addition, Coomer said that additional partners will be added after the initial set and that the group of partners is not a static group. So yes, there will be a variety of Steam Machine configurations and the box will more than likely evolve over time and as technologies change.