As the owner of an OQO 02/e2 I would like to correct a couple of comments. First, the Atom is extremely thrifty when it comes to power versus any other x86 chip currently in production. It will not run at default speeds as long as an ARM chip but its speeds are higher than ARM chips which are currently in production. If you want to maximize battery life you can always run it at less than 100% of maximum (a feature available in Vista and Win7 and, I would assume, in some Linux distros). OTOH, the biggest battery drain is no longer the CPU, it's the screen, and a 5 inch screen sucks a lot more power than a 3.5 inch screen.

As far as the heat and fan noise mentioned in the linked article, my OQO runs a Via C7M chip at 1.5GHz. It generates enough heat that it requires active cooling and the fan is noticeable. However, one of the benefits of the Atom is that its thermal specs are significantly better. The Viliv S5 which runs at 1.33GHz is fanless. I would be very surprised if the Inkia which runs at 1.1GHz has a fan.

That said, the new crop of x86 MIDs is very interesting. They can definitely serve as a full computer in your pocket with three caveats. First, while they are faster than the NITs they are slower than most laptops - about the same speed as an average netbook. Second, regardless of the improvements that Intel has made, their battery life is measured in hours, not days. Third, they are bigger and heavier than the NITs - about 12 ounces for the Inkia versus 8 for the N810.

Personally I can live with their limitations and I use my OQO (which has the advantage of built in 3G) constantly.