sends this quote from Ars:
"The argument back then was this: Windows on ARM would mean discarding the thing that makes Windows entrenched and important: Windows applications. Tablets need all-new applications, and if you're going to run all-new applications then you don't really need Windows. ... In the time it has taken Microsoft to bring Windows on ARM to market, ARM's once overwhelming battery life advantage has been erased. The ARM CPUs may still have a slight power use edge, but the difference will typically be dwarfed by the power consumption of the screen. The Intel processors, in turn, bring CPU performance that is probably best in class (or close to it), and most importantly of all the ability to run the full version of Windows 8 and existing Windows applications. The hardware could look identical to the user, but if it has Intel inside, the user experience will be quite different. ... With these constraints and limitations, it's hard to see who exactly Windows RT is for. I acknowledge that there are certainly some users who will be content to use the browser, mail app, and perhaps type the occasional letter in Word or balance their checkbook in Excel: people for whom the Windows Store's current gaps do not matter. But I think a much wider selection of users will be ill-served by Windows RT."