nano will beat the pants off atom in performance/watt, no doubt whatsoever. i'm reasonably certain the chipsets for nano also consume less than the 20w atom chipsets do, a fact that i find to be hilarious as fuck.

now if only via would hurry up and start selling them.

Intel having a shortage of chips is kind of like a kid who doesn't have time to open all his presents Christmas day. Neither the kid, nor Intel, is going to feel all that much stress. I mean, what's there to get stressed about? "OMG!!! We don't have enough chips to hand out. Now, instead of making alef-null dollars, it just going to be an infinite number of dollars." HORROR (cue scary music)

easy fix....use the nano instead...
wait that isn't even out yet....