The iPad 2 was announced, the first tests on the new tablet arrives. And some say that the iPad 2 is much faster at browsing, thanks to its dual core processor. Under Sun Spider, a test to verify performance in javascript, the iPad and reached 2 121 ms while the iPad first generation is limited to 8549 ms.
A striking difference, because even if the processor is based on an a priori Cortex A9, slightly faster than the Cortex A8, a gain of this magnitude is surprising. So we checked a point: the influence of IOS 4.3. And this is the new operating system that is the basis for much of the gains on Sun Spider.
In fact, iPhone 4.2 iOS 4 with a score of 10 125 ms on Sun Spider, which is consistent with the frequency difference between the iPhone and iPad (the processor operates at 800 MHz and 1 in the iPhone iPad GHz). With IOS version 4.3 in beta, the iPhone 4 reaches 4360 ms, an improvement rather obvious.
By extrapolation, an iPad iOS under 4.3 should be about 3500 ms. The difference is much smaller than expected. And we must take into account that if Apple A5 is based on a Cortex A9 (a priori is the case), the CPU part is 25% faster than on a Cortex A8. Finally, the iPad 2 is definitely faster than the iPad, but the gain should not be so high as that initial tests show.
[UPDATE]: Version 4.3 As GM iOS available, we tested on a Sun Spider iPad first generation. Our estimates were correct, the score of the machine is 3322 ms, which shows that a large portion of the gains of the iPad 2 comes from the passage of iOS iOS 4.2 to 4.3.
A striking difference, because even if the processor is based on an a priori Cortex A9, slightly faster than the Cortex A8, a gain of this magnitude is surprising. So we checked a point: the influence of IOS 4.3. And this is the new operating system that is the basis for much of the gains on Sun Spider.
In fact, iPhone 4.2 iOS 4 with a score of 10 125 ms on Sun Spider, which is consistent with the frequency difference between the iPhone and iPad (the processor operates at 800 MHz and 1 in the iPhone iPad GHz). With IOS version 4.3 in beta, the iPhone 4 reaches 4360 ms, an improvement rather obvious.
By extrapolation, an iPad iOS under 4.3 should be about 3500 ms. The difference is much smaller than expected. And we must take into account that if Apple A5 is based on a Cortex A9 (a priori is the case), the CPU part is 25% faster than on a Cortex A8. Finally, the iPad 2 is definitely faster than the iPad, but the gain should not be so high as that initial tests show.
[UPDATE]: Version 4.3 As GM iOS available, we tested on a Sun Spider iPad first generation. Our estimates were correct, the score of the machine is 3322 ms, which shows that a large portion of the gains of the iPad 2 comes from the passage of iOS iOS 4.2 to 4.3.
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