Seems like Intel is really struggling to compete with ARM in this category. I can't imagine Intel will be used for much longer in the MBA. With the performance of the A8X it would seem logical for Apple to move to ARM in the next couple years.
I'm always amused by comments like these. I realize that people think CPUs are all the same but ARM isn't even in the same universe as Intel when it comes to performance.
I don't mean surfing the web, wandering around FaceBook, writing an email or doing something frivolous while waiting for your coffee at StarBucks. I'm talking real work most people do on a notebook computer.
ARM is great at power management (RISC Instructions) but sacrifice's performance for that power management. Your iPad and iPhone run a lite version of OS X in a very tightly controlled environment with limited multitasking.
Now imagine that same ARM processor in a MBP with a full version of OS X running many heavy duty applications (think Photoshop, X-Code, Word, Excel, Dreamweaver, etc...) all at the same time. ARM based CPUs are just not designed to work in that kind of environment.
So you think Intel is struggling? Intel has the most advanced and cutting edge R&D facilities in the world when it comes to microprocessor technology. Nobody comes close. They are years ahead of everyone else.
Intel has had to maintain the same instruction set while moving forward in a world where people want insane performance out a multicore chip with all day battery life in a tiny package.
When you look at Sandy Bridge, Ivy Bridge and Haswell, their performance has gone up while power usage has gone down. That is impressive advancement given everything that Intel has to maintain.
I think the limits of ARM will hurt them in the end. I think that Intel's R&D and industry might will move their chips to match the power efficiency of ARM with that added performance and instruction compatibility that people want (even if they don't really know it).
I think devices like the iPad and iPhone will eventually move to Intel processors.
Here is an older
article with more information.