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The iPhone6 has to render 37% more pixels, though. That's probably where the 50% increase in performance is going towards.
 
The iPhone6 has to render 37% more pixels, though. That's probably where the 50% increase in performance is going towards.

Correct!

So what doesn't make sense to me is iPhone 6 Plus rendering about 200% more pixels with only a 50% GPU increase. But maybe the 5S was just overpowered?
 
Or maybe the iPhone 6+'s graphics performance will be worse than the 5s? We won't know until these devices land in user's hands.
 
If the 6P does end up being worst than the 5S, then i be mighty pee'd off if i just spent over £600 on one.
 
Seems like the 5 was an especially good buy. You got a new body and much faster phone. Usually when the body is updated the phone is almost the same speed as its predecessor (3G vs original, 4 vs 3GS, 6 vs 5S)

In the first two cases, the phones only lasted ~2 iOS versions before slowing down significantly (3G slowed down around 4.2.1, 4 slowed down around 6.0)....so I would expect the 6 to slow noticeably on iOS 9 and significantly on iOS 10, unless something changes
 
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