Windows 8 on ARM
Tuesday, September 20, 2011 at 4:29PM There's lots of talk about Windows 8 running on ARM. Here's the facts so far:
- Windows 8 will run on both ARM and Intel
- Both Metro and the "classic" Windows desktop will run on both architectures
- There will not be a "compatibility" layer for ARM, akin to the Mac's Rosetta. Apps compiled for Intel will need to be rebuilt for ARM.
To me, this looks like a move to prop up Intel against a smaller, lighter, more power efficient competitor in a new market.
Here's why. A consumer walks into a store, wanting to buy the latest Windows 8 tablet. There's two models available, the ARM model and the Intel model. They look the same, they run the same OS with the same features, and if you plug a mouse and keyboard in you'll get the same old familiar Windows desktop. But, the ARM model has, let's say 10 hours of battery life, and the Intel has maybe 7. (These are fake numbers based on the idea of ARM power management being way better than Intel, by the way. Please don't write letters.)
However, if you've been using Windows for a long time, which is likely if you're buying a Windows tablet, you probably have a bunch of Windows software kicking around. Old software, most likely. The ARM tablet might run it, if you upgrade to the latest version and they've bothered to build an ARM version (which as John Gruber points out, is not a trivial thing to do). The Intel tablet will run it. Likely, all of it, back to your ancient copy of Photoshop 3 or whatever. If it runs on Windows 7, it will probably run on Windows 8 Intel tablets.
If there was an ARM compatibility layer, Intel tablets would be way behind. It seems to me like Microsoft is making moves to keep Intel on a level playing field in the tablet space.
Mike |
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