Re: Re: Re: mehPad (@hazydave)
"You GPU isn't doing any of the "grunt work". It helps on 3D games... "
Er, no. The GPU is used all the time on a composited GUI like iOS's. I think Android's is the same now, although it used to be entirely reliant on the CPU in older releases.
So iOS uses the GPU for all its rendering, even for the settings pages and home screens. It's a composited GUI built on "Display PDF" (an evolution of NeXTSTEP's Display Postscript engine). This is why both iOS and OS X have PDF support 'baked in' at the OS level; developers get PDF support for free.
As iOS is built on a task-switching design, there's little need for more than a couple of CPU cores for the vast majority of apps. The design favours frugal resource usage, improved stability, and increased battery life, at the expense of a feature few users appear to miss given the sales figures, so I'd say Apple made the right choice here.
Games, (and some apps, like "Elements", that rely heavily on rich media), really gain far more from GPU improvements than CPU improvements. Simply nailing on a couple more ARM cores really doesn't have as much benefit for iOS devices compared to Android devices. If you're going for full-on multitasking, those cores do come in handy, but you also need to throw in a lot more RAM too, both of which will increase your bill of materials.
That's also why, try as they might, Android device manufacturers are having such a hard time beating Apple's prices: Android does more, but this means it has higher minimum system requirements. Which means it will cost more to build an Android tablet than to build an iOS one. For now.
If the iPad 3 is coming with a Retina display, that means it'll be shunting pixels around a screen with a higher resolution than any currently available laptop. That's going to require some serious GPU power, not more CPU cores.