Developer Delves Into Reasons Why Apple's M1 Chip is So Fast

Apple's M1 chip is the fastest chip that Apple has ever released in a Mac based on single-core CPU benchmark scores, and it beats out many high-end Intel Macs when it comes to multi-core performance. Developer Erik Engheim recently shared a deep dive into the ‌M1‌ chip, exploring the reasons why Apple's new processor is so much faster than the Intel chips that it replaces.

m1 chip macbook air pro
First and foremost, the ‌M1‌ isn't a simple CPU. As Apple has explained, it's a System-on-a-Chip, which is a series of chips that are all housed together in one silicon package. The ‌M1‌ houses an 8-core CPU, 8-core GPU (7-core in some MacBook Air models), unified memory, SSD controller, image signal processor, Secure Enclave, and tons more.

Intel and AMD also ship multiple microprocessors in a single package, but as Engheim describes, Apple has a leg up because rather than focusing on general purpose CPU cores like its competitors, Apple is focusing on specialized chips that handle specialized tasks.

In addition to the CPU (with high-performance and high-efficiency cores) and GPU, the ‌M1‌ has a Neural Engine for machine learning tasks like voice recognition and camera processing, a built-in video decoder/encoder for power-efficient conversion of video files, the Secure Enclave to handle encryption, the Digital Signal Processor for handling mathematically intensive functions like decompressing music files, and the Image Processing Unit that speeds up tasks done by image processing apps.

Notably, there's also a new unified memory architecture that lets the CPU, GPU, and other cores exchange information between one another, and with unified memory, the CPU and GPU can access memory simultaneously rather than copying data between one area and another. Accessing the same pool of memory without the need for copying speeds up information exchange for faster overall performance.

All of these chips with specific purposes speed up specific tasks, leading to the improvements that people are seeing.

This is part of the reason why a lot of people working on images and video editing with the M1 Macs are seeing such speed improvements. A lot of the tasks they do, can run directly on specialized hardware. That is what allows a cheap M1 Mac Mini to encode a large video file, without breaking sweat while an expensive iMac has all its fans going full blast and still cannot keep up.

Specialized chips have been in use for years, but Apple is taking a "more radical shift towards this direction," as Engheim describes. Other Arm chip makers like AMD are taking a similar approach, but Intel and AMD rely on selling general purpose CPUs and for licensing reasons, PC manufacturers like Dell and HP are likely not able to design a full SoC in house like Apple is able to do.

Apple is able integrate hardware and software in a way that's just not possible for most other companies to replicate, which is always something that's given the iPhone and iPad an edge over other smartphones and tablets.

Sure Intel and AMD may simply begin to sell whole finished SoCs. But what are these to contain? PC makers may have different ideas of what they should contain. You potentially get a conflict between Intel, AMD, Microsoft and PC makers about what sort of specialized chips should be included because these will need software support.

Along with the benefits of an in-house designed System-on-a-Chip, Apple is also using Firestorm CPU cores in the ‌M1‌ that are "genuinely fast" and able to execute more instructions in parallel through Out-of-Order execution, RISC architecture, and some specific optimizations Apple has implemented, which Engheim has an in-depth explanation of.

Engheim believes that Intel and AMD are in a tough spot because of the limitations of the CISC instruction set and their business models that don't make it easy to create end-to-end chip solutions for PC manufacturers.

Engheim's full article is well worth reading for those who are interested in how the ‌M1‌ works and the technology that Apple has adopted to take a giant leap forward in computing performance.

Top Rated Comments

tumtumtum Avatar
44 months ago
People who are really serious about software should make their own hardware.” - Alan Kay

Steve Jobs would be beaming over the M1.
Score: 68 Votes (Like | Disagree)
Quicksilver867 Avatar
44 months ago
It has been some time since I've been this impressed by a computer hardware development. Very much looking forward to where the M series goes.
Score: 38 Votes (Like | Disagree)
cmaier Avatar
44 months ago

This will come at the price of configurability and "only" able to run Apple OS, all of which is fine, for Apple.

99.9% of all computing devices sold only run one OS. This is fine.
Score: 30 Votes (Like | Disagree)
cmaier Avatar
44 months ago

RISC has been "the future" since at least 1985 when ARM started, and a bit before that with MIPS.
It looks like it is finally reality now in more than quite narrow markets.
Problem with Risc has never been technology. Lots of RISC processors in the past have blown away their CISC competitors.

The problem has always been “does it seamlessly run Windows and existing Windows apps?”

BYOD, the mobile Arm hegemony, and Apple’s expertise at supporting multi-architecture code has finally broken the glass.
Score: 29 Votes (Like | Disagree)
Ds6778 Avatar
44 months ago
it’s impressive that it’s not even a real comparison at this point. The M1 is insane. Anyone arguing that Intel is better is in denial.
Score: 28 Votes (Like | Disagree)
Mike MA Avatar
44 months ago
Soon people will recognize that this is the „One more thing“ they‘ve all been waiting for the last couple of years.
Score: 23 Votes (Like | Disagree)

Popular Stories

iOS 18 Siri Integrated Feature

iOS 18 Will Add These New Features to Your iPhone

Friday April 12, 2024 11:11 am PDT by
iOS 18 is expected to be the "biggest" update in the iPhone's history. Below, we recap rumored features and changes for the iPhone. iOS 18 is rumored to include new generative AI features for Siri and many apps, and Apple plans to add RCS support to the Messages app for an improved texting experience between iPhones and Android devices. The update is also expected to introduce a more...
iGBA Feature

Game Boy Emulator for iPhone Now Available in App Store Following Rule Change [Removed]

Sunday April 14, 2024 8:06 am PDT by
A week after Apple updated its App Review Guidelines to permit retro game console emulators, a Game Boy emulator for the iPhone called iGBA has appeared in the App Store worldwide. The emulator is already one of the top free apps on the App Store charts. It was not entirely clear if Apple would allow emulators to work with all and any games, but iGBA is able to load any Game Boy ROMs that...
iGBA Feature

Apple Removes Game Boy Emulator iGBA From App Store Due to Spam and Copyright Violations

Sunday April 14, 2024 9:22 pm PDT by
Apple today said it removed Game Boy emulator iGBA from the App Store for violating the company's App Review Guidelines related to spam (section 4.3) and copyright (section 5.2), but it did not provide any specific details. iGBA was a copycat version of developer Riley Testut's open-source GBA4iOS app. The emulator rose to the top of the App Store charts following its release this weekend,...
iOS 18 Siri Integrated Feature

Apple's First AI Features in iOS 18 Reportedly Won't Use Cloud Servers

Sunday April 14, 2024 9:52 am PDT by
Apple's first set of new AI features planned for iOS 18 will not rely on cloud servers at all, according to Bloomberg's Mark Gurman. "As the world awaits Apple's big AI unveiling on June 10, it looks like the initial wave of features will work entirely on device," said Gurman, in the Q&A section of his Power On newsletter today. "That means there's no cloud processing component to the...
new best buy blue

Best Buy Opens Up Sitewide Sale With Record Low Prices on M3 MacBook Air, iPad, and Much More

Saturday April 13, 2024 7:41 am PDT by
Best Buy this weekend has a big sale on Apple MacBooks and iPads, including new all-time low prices on the M3 MacBook Air, alongside the best prices we've ever seen on MacBook Pro, iPad, and more. Some of these deals require a My Best Buy Plus or My Best Buy Total membership, which start at $49.99/year. In addition to exclusive access to select discounts, you'll get free 2-day shipping, an...
m3 mbp space black

M4 Macs Are Expected to Launch in This Order Starting Later This Year

Sunday April 14, 2024 10:40 am PDT by
Bloomberg's Mark Gurman recently reported that the first Macs with M4 series chips will be released later this year, with more models to follow next year. In his Power On newsletter today, Gurman shared a more specific roadmap for these Macs. Here is the order in which Gurman expects the Macs to launch:1. A low-end 14-inch MacBook Pro with the M4, coming around the end of 2024. 2. A 24-inch ...
iOS NES Emulator Bimmy Feature

NES Emulator for iPhone and iPad Now Available on App Store [Removed]

Tuesday April 16, 2024 11:33 am PDT by
The first approved Nintendo Entertainment System (NES) emulator for the iPhone and iPad was made available on the App Store today following Apple's rule change. The emulator is called Bimmy, and it was developed by Tom Salvo. On the App Store, Bimmy is described as a tool for testing and playing public domain/"homebrew" games created for the NES, but the app allows you to load ROMs for any...
top stories 13apr2024

Top Stories: M4 Mac Roadmap Leaked, New iPads in Second Week of May, and More

Saturday April 13, 2024 6:00 am PDT by
Apple's hardware roadmap was in the news this week, with things hopefully firming up for a launch of updated iPad Pro and iPad Air models next month while we look ahead to the other iPad models and a full lineup of M4-based Macs arriving starting later this year. We also heard some fresh rumors about iOS 18, due to be unveiled at WWDC in a couple of months, while we took a look at how things ...