Just after wrapping up its CES 2013 press conference, Intel showed off two Ultrabooks: one that's just a concept, and one that you can actually buy. What you see in that photo up there is the NEC LaVie X, the follow-up to last year's NEC LaVie Z. It's a 15-inch Ultrabook that measures just 12.8mm thick. We realize you might be desensitized to such specs at this point, so here's a little context: that's almost two millimeters thinner than the 15-inch Samsung Series 9, which alre
