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Apple's Phil Schiller and Anand Shimpi Provide Insight Into A12X Chip in New iPad Pro Models

Apple marketing chief Phil Schiller and Apple chip expert Anand Shimpi, who created AnandTech, recently sat down for an interview with Ars Technica to provide a walkthrough of the A12X chip in the iPad Pro and some insight into Apple's chip development techniques.

The A12X is an 8-core chip with four performance and four efficiency cores, all of which can be active at once. The iPad Pro is the first iPad able to use so many cores simultaneously, and you're going to see major gains over the A10X when running heavily-threaded workflows, according to Shimpi.

"You typically only see this kind of performance in bigger machines--bigger machines with fans," Shimpi claimed. "You can deliver it in this 5.9 millimeter thin iPad Pro because we've built such a good, such a very efficient architecture."
The GPU in the iPad Pro is the first 7-core implementation of Apple's custom-designed GPU, Shimpi told Ars Technica. Each core is "faster and more efficient" than the GPU in the previous-generation A10X, leading to 2x improved graphics performance. "It's unheard of in this form factor, this is really an Xbox One S class GPU," said Shimpi.

With more memory bandwidth, the GPU is faster than what you might get on the iPhone with workloads that are able to take advantage of a 2x bigger memory subsystem. According to Shimpi, Apple takes content from the desktop, profiles it, and uses the data to drive its GPU architectures.

On the topic of why Apple designs its own custom silicon, Shimpi said the company wants to make sure it can deliver "whatever vision" it has for a given product, while Schiller says that Apple keeps pushing for more performance not because Apple is competing with other companies, but because employees are passionate about making things better for users.
What do we think we can do? It becomes this incredibly self-perpetuating thing. When you realize you can create a Neural Engine, you want to create a better Neural Engine! You realize you can create great graphics, you want to create even better graphics! And it just accelerates. It picks up speed within the organization.

If you're a team that makes an incredible, great Apple-designed A-series chip, well, next year you want to make an even better one, right? That's your passion. That's what you see across all Apple, is teams that take responsibility for their things are so passionate about making that thing better and better and better. It doesn't even matter what anyone else is doing.
Apple's success with creating high-powered chips can be attributed to the way teams inside of Apple work together on an ongoing basis, says Schiller.

Schiller and Shimpi declined to talk about Apple's future plans for its custom chips, but there have been multiple rumors suggesting Apple will eventually transition its chips from mobile devices to the Mac, with the change to happen as soon as 2020.

Ars Technica has a much deeper look at the A12X that you're going to want to read in full over at the site if you're at all interested in chip architecture and Apple's future chip plans.

Related Roundup: iPad Pro


Top Rated Comments

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1 week ago

Shame it’s hindered by iOS. Imagine if this had OSX on it. If Apple came out with this dual booting operating systems....Microsoft would be running for the hills.

Shame this comment is not treated as spam that results in instaban.

iPad is possible because of iOS, not limited by it. The shame is that we have to listen to people repost and repost and repost and repost and repost and repost this same tired nonsense that has not an ounce of truth in it.
Rating: 18 Votes
1 week ago
Shame it’s hindered by iOS. Imagine if this had OSX on it. If Apple came out with this dual booting operating systems....Microsoft would be running for the hills.
Rating: 18 Votes
1 week ago
Amazing hardware limited by software.
Rating: 18 Votes
1 week ago

Shame this comment is not treated as spam that results in instaban.

iPad is possible because of iOS, not limited by it. The shame is that we have to listen to people repost and repost and repost and repost and repost and repost this same tired nonsense that has not an ounce of truth in it.

I think you missed his point here. What he meant (I believe) is that iOS doesn't take full advantage of the power and its kinda crippled as iOS was designed for iPhone at the start and it hasn't developed that much for the use in iPad Pros.
The reason, why people say these comments is because its kinda true. iOS needs to evolve and needs to evolve fast if they really want iPad Pros to be real computers.
Yes, you can do a lot on an iPad but no, you can't really call it a computer (yet) because of its limitation that is in the iOS.
Rating: 14 Votes
1 week ago
There should be no doubt in your minds that there are prototype Macs on 10.15/10.16 alphas within Apple Park running on A12 (and later) ARM-based chips. You can bet on that.

Whether they see the light of day and if it's a 2019 or 2023 thing, is a different story.
Rating: 8 Votes
1 week ago
I’m not gonna let all this “only 4gb of ram” talk rain on my iPad parade lol..

I’ve been using an air with 1gb of ram every day for 5 years...this iPad is a beast of a device.

iOS can only get better and more efficient in ram management.
Rating: 7 Votes
1 week ago
Only a fool would bet against Apple moving to using these in desktops.
Rating: 7 Votes
1 week ago

It is really trippy to hear Anand talk about these chips possessively, instead of as a third party objective journalist. I miss his deep dives.

I wonder what he actually does at Apple. He was hired what, a year ago? This is the first time I've heard his name since he was acquired by Apple.
Rating: 7 Votes
1 week ago

Only a fool would bet against Apple moving to using these in desktops.

As soon as it becomes practical to do so, there is no doubt that they will. Availability of chips is the number one thing that holds back a Mac refresh. When Apple is designing its own chip for whatever Mac they want to build, it is going to be a good day.
Rating: 6 Votes
1 week ago
It is really trippy to hear Anand talk about these chips possessively, instead of as a third party objective journalist. I miss his deep dives.
Rating: 6 Votes

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