On Sep 10, 2013, at 2:01 PM, Abdul Sowayan <asowa...@vectorworks.net> wrote:

> I'm curious, why does 64-bit matter? iPhone memory is still around 1 gig and 
> there is no virtual memory. Until you exceed the 4 gig limit, I don't see why 
> this matters. 

Fragmentation of address space & dealing with large blocks... And it's not 
really a 4GB limit, since there has to be a big chunk (likely 1GB) of address 
space reserved for the kernel.

Of course there's a vast variety of apps for which this does not matter at all. 
But 64-bit makes available some really powerful techniques that are impractical 
otherwise.

Also, wouldn't it be nice if tech writers knew anything about their subject? I 
got $20 right here that sez the A7 has more than 2 general-purpose 
registers--anybody want to take that bet ;-) (Maybe somebody doesn't know the 
difference between a register and a core???)

-- 
Scott Ribe
scott_r...@elevated-dev.com
http://www.elevated-dev.com/
(303) 722-0567 voice





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