iPod touch A5 vs A6: The Difference Will Be Shocking.

gladoscc

macrumors 6502
Original poster
Jul 13, 2011
295
40
Remember the 3G on iOS 4 fiasco?

Why did that happen? The 3G was on a different architecture (ARMv6). iOS 4 was designed for ARMv7, 3GS and up. Because of this, the iPhone 3G was slow as a brick.

Now with the A6 (ARMv7s), you can expect iOS 8 coming two years later to be a repeat of iOS 4. Pre-A6 devices will lag regardless of how fast it is or if it's a singlecore or dual core. It's because of a different architecture.

This isn't like 3GS -> 4 which has like a 20% performance increase. This is double just by specs.
 
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caramelpolice

macrumors regular
Oct 6, 2012
211
227
First of all, 3GS+ phones are ARMv7, not ARMv9 - in fact, ARMv9 doesn't even exist. This includes the iPhone 5. The A6 is customized, but still fundamentally based on ARMv7. The jump is nothing like 3G-3GS.
 
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gladoscc

macrumors 6502
Original poster
Jul 13, 2011
295
40
ARMv7s = iPhone 5
ARMv7 = iPhone 3GS, iPhone 4, iPhone 4S, iPod 3G/4G/5G, iPad, iPad 2, iPad 3
ARMv6 = iPhone 2G/3G, iPod 1G/2G
 

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