We'll probably never hear an official justification for why Apple only
put 512MB of RAM in the iPhone 4S. But you know what? They don't need one. Because you'll hardly be able to tell. Here's why.
More » Source: http://feeds.gawker.com/~r/gizmodo/full/~3/Mm5ZTuv1loM/why-iphone-4s-only-has-512-megabytes-of-ram
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