Apple A8 Benchmarked

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Rakehellion

Lifer
Jan 15, 2013
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The A6X is a chip not utilized in any iPhone and it has a huge GPU upgrade that makes it capable of running like that.


Pretty sure the A6X is competitive with A7 too, but I wouldn't want A7 running 1080p

The A8 is much faster than the A6X.
 

mohit9206

Golden Member
Jul 2, 2013
1,381
511
136
For a while I was confused that the A8 CPU in iPhone 6 was super-overclocked Cortex A8 CPU in iPhone 3GS lol. But 1gb ram will prevent more recent 7th gen console ports.No way Bioshock Infinite would work on 1gb ram but it could work in Android flagships like Xperia Z3 and S5 as they have much more Ram.
 

Eug

Lifer
Mar 11, 2000
24,040
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But 1gb ram will prevent more recent 7th gen console ports.No way Bioshock Infinite would work on 1gb ram but it could work in Android flagships like Xperia Z3 and S5 as they have much more Ram.
Why do you say that?
 

witeken

Diamond Member
Dec 25, 2013
3,899
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Pretty boring upgrade from a technical perspective. ~16% CPU performance bump (partially from higher clocks) + <20% GPU performance bump (according to the Basemark/3DMark numbers). I wonder if we'll ever see a A6->A7 performance increase again. As much as I like the iOS ecosystem the Exynos 5433-based Note 4 with QHD screen and 3/4GB RAM is looking more tempting.

Maybe Apple slowed down to claim 2X improvement (GPU) next year with FinFET.
 

Ajay

Lifer
Jan 8, 2001
16,094
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But iOS has no swap file.

Maybe I'm misunderstanding the terminology/technology here, but iOS just asks apps to give up memory, or else it just takes it. It doesn't page it out to swap, because there is no swap file in the first place.

Yeah, it's weird. IOS has a virtual memory system, just like OSX, but no swap file. I found this on how IOS handles memory management w/o a swap file:
Although Mac OS X supports a backing store, iOS does not. In iPhone applications, read-only data that is already on the disk (such as code pages) is simply removed from memory and reloaded from disk as needed. Writable data is never removed from memory by the operating system. Instead, if the amount of free memory drops below a certain threshold, the system asks the running applications to free up memory voluntarily to make room for new data. Applications that fail to free up enough memory are terminated.
 

Rakehellion

Lifer
Jan 15, 2013
12,181
35
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But 1gb ram will prevent more recent 7th gen console ports.No way Bioshock Infinite would work on 1gb ram but it could work in Android flagships like Xperia Z3 and S5 as they have much more Ram.

The Xbox 360 and PS3 have 512MB of memory. The thing that's holding back console ports is GPU speed, though Metal might change that.

Bioshock was already ported to iOS.
 
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kpkp

Senior member
Oct 11, 2012
468
0
76
Apparently the 6+ renders everything at 2208&#8201;×&#8201;1242, will we see complains (maybe after a few months) that the 6+ performs worse then the 6?

Will be interesting to see what are the SoC configurations for both models.
 
Mar 10, 2006
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I wonder if the iPad will have an A8X along with 2GB of RAM. They have more thermal headroom in an iPad, and iPad is typically much lower margin anyway, so might as well spring for the 2GB.

Also, it would give iPhone users a reason to buy an iPad...something that may be difficult to achieve given the iPhone 6+.
 

NTMBK

Lifer
Nov 14, 2011
10,410
5,674
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Debatable. Didn't it run at 1024x600 and have a frame rate around 30?

Digital Foundry reckoned 1152x640. They also concluded that the console ports are perfectly playable:

Despite our concerns with performance on console, Irrational Games still manages to deliver an engrossing experience across all formats, where the core experience is so strong that the game is an essential purchase no matter which platform you own.

http://www.eurogamer.net/articles/digitalfoundry-bioshock-infinite-face-off
 

witeken

Diamond Member
Dec 25, 2013
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According to Macrumors, iPad Air 2 might have 2GB of RAM to deal with a new split screen feature.
 

Eug

Lifer
Mar 11, 2000
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I wonder if the iPad will have an A8X along with 2GB of RAM. They have more thermal headroom in an iPad, and iPad is typically much lower margin anyway, so might as well spring for the 2GB.

Also, it would give iPhone users a reason to buy an iPad...something that may be difficult to achieve given the iPhone 6+.
I don't understand that logic. It would be harder to include more components in a lower margin product. It's easier to do that with higher margin products.

With a lower margin product, the manufacturer might be more inclined to raise the price to compensate, if they upsize the components.

According to Macrumors, iPad Air 2 might have 2GB of RAM to deal with a new split screen feature.
That rumour is dubious.
 
Mar 10, 2006
11,715
2,012
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I don't understand that logic. It would be harder to include more components in a lower margin product. It's easier to do that with higher margin products.

With a lower margin product, the manufacturer might be more inclined to raise the price to compensate, if they upsize the components.


That rumour is dubious.

Well, it's actually a couple of things.

First, iPhone is a much larger contributor to Apple's revenue and, more importantly, profit base. So margin decreases are to be avoided if at all possible. Apple has shown that people will trip over themselves to buy the latest iPhone even with "just" 1GB of RAM.

But the iPad is different. It's a much lower margin product, and the VOLUMES on that product are already significantly lower, so the impact of lower margins per unit on Apple's bottom line aren't anywhere near as pronounced as they are on iPhone. iPad is also a product category that is struggling, having posted several quarters of year-over-year unit/revenue declines, so Apple is probably more willing to sacrifice margin per unit to help reinvigorate growth.

Commensurate with this line of reasoning, I fully expect 2GB of RAM on a new iPad Air.
 

witeken

Diamond Member
Dec 25, 2013
3,899
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First, iPhone is a much larger contributor to Apple's revenue and, more importantly, profit base. So margin decreases are to be avoided if at all possible. Apple has shown that people will trip over themselves to buy the latest iPhone even with "just" 1GB of RAM.
The most "amazing" thing is that those iFanboys have no problem with paying 2X as much just to get a fancy Apple logo on their phone. The fact that it has only 1GB of RAM pales in comparison.
 

jdubs03

Golden Member
Oct 1, 2013
1,257
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I seriously question the impact on margins of including a further 1GB of RAM, we're talking about ~5% of the BOM, it wouldn't be lowering the margin much at all, certainly not enough to hurt their profit line, especially considering they sell the damn thing for $650+.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
I seriously question the impact on margins of including a further 1GB of RAM, we're talking about ~5% of the BOM, it wouldn't be lowering the margin much at all, certainly not enough to hurt their profit line.

It isn't like Apple has to worry about money anyway...
 

Eug

Lifer
Mar 11, 2000
24,040
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The most "amazing" thing is that those iFanboys have no problem with paying 2X as much just to get a fancy Apple logo on their phone. The fact that it has only 1GB of RAM pales in comparison.
This argument again.

I'll just say I went from a 3.5" iPhone to a 4.7" flagship Android phone. I was very happy to go back to a 4" iPhone, even at a higher price. The cohesion of the ecosystem is much better IMHO, and the slickness of the OS and the apps (even 3rd party ones) is usually better too. It's not about the logo. It's about the implementation.

On Android I was constantly fiddling, but it was because I was forced to, not because wanted to. For example, do I really need to choose or not choose a default action for every frickin' action? It annoyed me almost as much as the security popups in Windows Vista. And that's just scratching the surface. I've also rooted my Nexus 7, but then decided it was a total waste of time. I went back to stock after a few weeks.

I think what gets lost here in this forum is that it's more than just about hardware specs and chip technology or whatever. To put it simpler terms, I'd rather use an iPhone 5 in 2015 than I would latest Galaxy S series phone or Nokia Windows phone, just because of the OS and app ecosystem.

YMMV.
 

kpkp

Senior member
Oct 11, 2012
468
0
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Where does it say that?

Gruber talks about it in his impressions:
The Plus, though, works differently. Physically, it is a 1920&#8201;×&#8201;1080 display with 401 pixels-per-inch. Virtually, however, it appears to apps as a 2208&#8201;×&#8201;1242 display with 463 pixels-per-inch. Those latter numbers should sound familiar to regular readers. The iPhone Plus automatically scales the 2208&#8201;×&#8201;1242 interface to fit the 1920&#8201;×&#8201;1080 display. This on-the-fly downsampling sounds crazy — it sounds like something that might be slow, and that might lead to fuzziness on screen with small text or fine lines. In practice, it just works. Text and fine lines appear sharper on the 6 Plus than on the regular 6 (or any other iPhone with a 326 PPI display, like the 5’s). 401 pixels per inch is high enough that things still look great even if they’re not pixel-perfect. I was deeply skeptical of this on-the-fly downsampling when I heard about it, but having used it for a week, I’m sold.

(When you take a screenshot on the iPhone 6 Plus, you get a 2208&#8201;×&#8201;1242 image — you get a screenshot of what the app thinks it is displaying, not a screenshot of the actual pixels on screen. If you really do care about pixel-level precision, I’m not sure how you can tell what is being rendered on screen other than to examine the actual iPhone display using an optical loupe.)
 

TreVader

Platinum Member
Oct 28, 2013
2,057
2
0
A8 is going to work fine at 1080p, but I think Apple will have to make a much larger improvement in GPU specifically with the 6S.


I think we were spoiled with A6 and A7. I wonder if apple will move to quad core with A9?

I doubt it. I'm not sure why a phone needs to be quad core when surface pro 3 is dual core, and is in another league performance wise.
 
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Eug

Lifer
Mar 11, 2000
24,040
1,664
126
A8 is going to work fine at 1080p, but I think Apple will have to make a much larger improvement in GPU specifically with the 6S.
Not necessarily.

I doubt it. I'm not sure why a phone needs to be quad core when surface pro 3 is dual core, and is in another league performance wise.
Surface Pro 3 is in a totally different class of CPU power utilization. Most people want their phones to last longer than 2 hours a day.
 
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