Apple A9X the new mobile SoC king

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Rakehellion

Lifer
Jan 15, 2013
12,182
35
91
So potentially the Apple customers are participating in a chip lottery? Some will get Samsung chips, some TSMC chips. Both may be clocked at the same frequency, but may e.g throttle differently.

Of course there may be variations between individual chips from the same manufacturer too, but still interesting.

Kind of reminds me of the panel lottery when buying LCD TVs...

So how do you know which one you're getting?
 

Rakehellion

Lifer
Jan 15, 2013
12,182
35
91
Does this include bitcode delivery via Xcode? It's default, but still optional for now - this will be a requirement in the near future. How will you prevent behind the scene optimizations?

You don't want to prevent behind the scene optimizations since every iOS developer has access to them.
 

Eug

Lifer
Mar 11, 2000
23,752
1,285
126
Wow, this DigiTimes article from 2013 nailed it.

http://www.digitimes.com/news/a20131218PD207.html

"Samsung will use its 14nm FinFET process to manufacture a portion of the A-series chips for Apple's 2015 iPhone series, and the remainder of the chips will be built using TSMC's 16nm FinFET technology, the sources indicated. TSMC should land 60-70% of Apple's total 14/16nm chip orders, with the remaining 30-40% to be taken over by Samsung, the sources said."
 

Eug

Lifer
Mar 11, 2000
23,752
1,285
126
I am still guessing they will bench the same, with throttling not being a significant issue, except under unusual conditions.
Yep. Confirmed.

Lots of people are installing that SoC identifier app, and then running GeekBench.

They're scoring 25XX / 44XX regardless if they have TSMC or Samsung.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
Now that there are multiple FinFETs in the market and have presumably been investigated, I wonder how they compare.

Is Samsung or TSMC's FinFET more like Intel's 22nm or 14nm in terms of power consumption etc? Please give sources.
 

Nothingness

Platinum Member
Jul 3, 2013
2,751
1,397
136
Now that there are multiple FinFETs in the market and have presumably been investigated, I wonder how they compare.

Is Samsung or TSMC's FinFET more like Intel's 22nm or 14nm in terms of power consumption etc? Please give sources.
I wonder the same. But is there any smartphone with a 14nm Intel chip?

Anyway I'm not aware of any public study about SoC power consumption (as opposed to full device power consumption).
 

Rakehellion

Lifer
Jan 15, 2013
12,182
35
91
The problem is that you won't know if Apple doesn't do specific benchmark optimizations.

That's a quite a stretch, but it's always possible to tell. Every other phone manufacturer who's cheated at benchmarks has been caught. Just rewrite the program and test again.
 

witeken

Diamond Member
Dec 25, 2013
3,899
193
106
I wonder the same. But is there any smartphone with a 14nm Intel chip?

Anyway I'm not aware of any public study about SoC power consumption (as opposed to full device power consumption).

I'm not talking about the SoC, I'm asking about the transistor, the fin.
 

Space69

Member
Aug 12, 2014
39
0
66
Just rewrite the program and test again.

How would that help? 'Just rewrite' - Are you aware of the resources needed for contant rewriting on multiple platforms?

You're uploading the next best thing after source code - you have no longer control over the specifics of your benchmark. There can be a large performance difference between compiler versions and Apple can contantly improve the bitcode compilation without any intervention from the benchmark developers. If Apple finds it beneficial to move heavy fp code to GPGPU processing, then what are we actually benchmarking?

Benchmarking on IOS can quickly transform into JS Engine comparisons.
 

stingerman

Member
Feb 8, 2005
100
11
76
I wonder the same. But is there any smartphone with a 14nm Intel chip?

Anyway I'm not aware of any public study about SoC power consumption (as opposed to full device power consumption).

I know of two competing technologies: Intel's relies on doping whereas IBM is pushing SOI. Intel's approach allowed them to come to market sooner, whereas IBM claims its process is simpler and allows lower power. I think we may be seeing the difference with Intel struggling to get into mobile devices?
 

Mondozei

Golden Member
Jul 7, 2013
1,043
41
86
Why? He's still incorrect in his conclusions.

Why do you refuse to submit to a cult of personality?
It's annoying when you do that.

On a more serious note, do we yet know if there is any performance delta between the two versions?
 

Rakehellion

Lifer
Jan 15, 2013
12,182
35
91
How would that help? 'Just rewrite' - Are you aware of the resources needed for contant rewriting on multiple platforms?

What are you on? There's no "constant rewriting." You change a few things around to fool the benchmark cheating, assuming any exists.
 
Last edited:

Rakehellion

Lifer
Jan 15, 2013
12,182
35
91
you have no longer control over the specifics of your benchmark. There can be a large performance difference between compiler versions

There has always been a difference in compilers since compilers have existed. If you can't get around unwanted compiler behavior then you're just a bad programmer.

The point is, these optimizations are accepted because a benchmark is supposed to closely simulate real-world performance. Furthermore, all developers have access to them equally.

If Apple finds it beneficial to move heavy fp code to GPGPU processing, then what are we actually benchmarking?

See above.
 

nvgpu

Senior member
Sep 12, 2014
629
202
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http://www.macrumors.com/2015/09/29/a9-chip-split-tsmc-samsung/

Hiraku Wang has created an app that's able to determine whether an iPhone has a TSMC chip or a Samsung chip, and has shared some data on results gathered from users who have installed his app.

According to results from approximately 2,500 iPhones, there are more TSMC chips than Samsung chips. TSMC chips were found to be installed on 58.96 percent of devices, compared to 41.04 percent for Samsung chips.

The iPhone 6s Plus appears to have relatively equal split of Samsung and TSMC chips, with slightly more Samsung chips. Of 1,329 iPhone 6 Plus devices, 56.81 percent have the Samsung chip while 43.19 percent have the TSMC chip.

 

Trumpstyle

Member
Jul 18, 2015
76
27
91
The A9x gonna be superinsane, something like twice the performance of xbox 360. Is that correct? Xbox 360 has similiar performance to Kepler soc from nvidia and A9x is more than 2x. I admit I thought samsung would do all a9 and tsmc all a9x seems it was wrong ): But this is quote from IDC "that practically all the A9's headed to market on the eve of the iphone 6S release were fabbed by TSMC." So Im not the only one haha.
 
Mar 10, 2006
11,715
2,012
126
Sorry, but didn't IDC claim that the A9 was 100% TSMC?

Nope. Here's what he said:

At any rate, for those who are curious, at the moment its all TSMC. Samsung was originally apportioned 80%, then 70% due to softening confidence in their yield ramp rate, and that was later on further reduced to 50%...but their yields are so low right now (compared to TSMC's) that practically all the A9's headed to market on the eve of the iphone 6S release were fabbed by TSMC. Should Samsung get their yields up, and same goes for GloFo for that matter, then they'll get to claw back their portion of the volume contracts for the A9 in the coming months and quarters.

http://forums.anandtech.com/showpost.php?p=37716711&postcount=34

Considering that the majority of the A9s tested thus far are TSMC, I'd say that this was pretty spot on.
 
Mar 10, 2006
11,715
2,012
126
The A9x gonna be superinsane, something like twice the performance of xbox 360. Is that correct? Xbox 360 has similiar performance to Kepler soc from nvidia and A9x is more than 2x. I admit I thought samsung would do all a9 and tsmc all a9x seems it was wrong ):

A9X will be a beast.
 
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