'M4 Extreme' Chip Unlikely After Apple 'Cancels' High-Performance Chip [Updated]

Apple this "past summer" canceled the development of a high-performance Mac chip that would have consisted of four smaller chips stitched together, in order to free up engineering resources for a planned AI server chip, according to The Information.

M4 Extreme Cancelled
Based on the report's description of the chip, it sounds like Apple has canceled a previously-rumored "Extreme" chip for the Mac. It was previously reported that an "M2 Extreme" chip was scrapped a few years ago, but perhaps Apple had revisited the idea since then. In any case, it now sounds like an "M4 Extreme" chip is also unlikely.

Apple likely would have introduced the "M4 Extreme" in its high-end Mac Pro tower. The chip would have offered even faster performance than the M4 Ultra chip that is expected to launch in new Mac Studio and Mac Pro models later next year.

If the "M4 Extreme" were to have been a quadrupled version of the M4 Max chip that debuted in the MacBook Pro a few months ago, it would have had massive specifications, including up to a 64-core CPU and up to a 160-core GPU.

While the "Extreme" chip may be off the table once again, it seems like Apple has repeatedly shown interest in developing such a chip, so perhaps it will eventually materialize as part of the M5 series or later. For now, though, the wait continues.

Update: After this story was published, Daring Fireball's John Gruber made a good point about how there is a long, multi-year gap between Apple designing and shipping new chips. Accordingly, it is possible the latest chip canceled actually would have been an "M5 Extreme" chip or later if development was only recently ended.

Related Roundup: Mac Pro
Buyer's Guide: Mac Pro (Neutral)
Related Forum: Mac Pro

Popular Stories

streaming black friday 2025

Black Friday Streaming Deals Include Big Savings on Disney+, Hulu, Apple TV, and More

Monday November 24, 2025 8:03 am PST by
We've been focusing on deals on physical products over the past few weeks, but Black Friday is also a great time of year to purchase a streaming membership. Some of the biggest services have great discounts for new and select returning members this week, including Disney+, Hulu, Paramount+, Peacock, and more. Note: MacRumors is an affiliate partner with some of these vendors. When you click a...
iOS 26

iOS 26.2 Adds These New Features to Your iPhone

Thursday November 20, 2025 10:50 am PST by
iOS 26.2 is currently in beta testing. The upcoming update includes a handful of new features and changes on the iPhone, including a new Liquid Glass slider for the Lock Screen's clock, offline lyrics for Apple Music, and more. In a recent press release, Apple confirmed that iOS 26.2 will be released to all users in December, but it did not provide a specific release date. Keep reading...
iOS 26 on Three iPhones

iOS 27 Will Reportedly Have Two Key Upgrades

Sunday November 23, 2025 8:48 am PST by
iOS 27 will reportedly have two major elements: quality improvements and new AI features. In his Power On newsletter today, Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense that Apple is focused on improving "quality and underlying performance" over adding new features. Gurman said there is one exception to this rule, though, as he expects...
maxresdefault

The MacRumors Show: iPhone 18 Pro Looks Like a Huge Upgrade

Friday November 21, 2025 9:10 am PST by
On this week's episode of The MacRumors Show, we talk through all of the new features and improvements expected to come to next year's iPhone 18 Pro and iPhone 18 Pro Max models. Subscribe to The MacRumors Show YouTube channel for more videos Apple's next-generation iPhones are less than ten months away and we already have a good idea about what to expect based on corroborated leaks, rumors,...
General Black Friday Deals 25 Red

Apple Black Friday Deals Available Now on AirPods, iPads, Accessories, and More

Friday November 21, 2025 8:48 am PST by
We're only a few days away from Black Friday, which will take place on Friday, November 28 in 2025. As always, this will be the best time of the year to shop for great deals, including popular Apple products like AirPods, iPad, Apple Watch, and more. In this article, the majority of the discounts will be found on Amazon. Note: MacRumors is an affiliate partner with some of these vendors. When...
Apple Shopping Event 2025

Apple Announces 2025 Black Friday Event, Here's What You Can Get

Thursday November 20, 2025 6:28 am PST by
Apple's annual four-day Black Friday through Cyber Monday shopping event is returning on Friday, November 28 through Monday, December 1 in many countries, including the United States, Canada, Australia, New Zealand, France, Germany, Italy, Spain, the United Kingdom, Belgium, the Netherlands, Sweden, Thailand, and others. During the shopping event, customers can get an Apple gift card with...
hikawa phone grip stand apple%402x

Apple Launches Second Limited-Edition iPhone Accessory in a Month

Friday November 21, 2025 3:53 am PST by
Apple has begun selling the Hikawa Phone Grip and Stand, a new limited-edition iPhone accessory designed with accessibility in mind. Designed by LA-based Bailey Hikawa to celebrate the 40th anniversary of accessibility at Apple, the grip uses magnets to securely snap onto any iPhone with MagSafe. Apple says it can be removed with ease, and doubles as a stand with two different viewing...
Apple Foldable Thumb

Foldable iPhone to Debut These Two Breakthrough Features

Wednesday November 19, 2025 7:26 am PST by
Apple's first foldable iPhone is expected to launch alongside the iPhone 18 Pro models in fall 2026, and it's shaping up to include two standout features that could set it apart from the competition. The book-style foldable will reportedly feature an industry-first 24-megapixel under-display camera built into the inner display, according to a recent JP Morgan equity research report. That...
amazon black friday

Amazon Kicks Off Black Friday Sale With Major Discounts on Apple Accessories, TVs, and More

Sunday November 23, 2025 7:12 am PST by
Black Friday deals have begun, and Amazon is one of the best places you can find steep discounts on numerous products this week. We've already collected all of the best Apple-related deals you'll find at Amazon (and other retailers) in our Apple Black Friday Deals post, so below you'll find other discounts on devices like Anker accessories, Beats headphones, video games, TVs, and more. Note:...

Top Rated Comments

CWallace Avatar
13 months ago

I've been wondering for years now why Apple doesn't make another dual processor Mac Pro, like they've done in the PPC and early Intel days.
The Apple Silicon architecture may not be designed for multi-processor operations so performance would not scale and you may hit issues with memory access and cache coherency.

This sounds like what is happening with these "Extreme" SoCs - the Ultra is not twice as good as the Max even though it is two Max connected directly. Two Ultras talking to each other across an external connection on a motherboard would be even worse.
Score: 16 Votes (Like | Disagree)
jb310 Avatar
13 months ago
It was really going to be called Extreme?

I guess we should pour one out for M4 Radical, M4 Totally Awesome, and M4 Most Excellent Dude. ?‍♂️
Score: 12 Votes (Like | Disagree)
Jack Burton Avatar
13 months ago
Just bring out the M4 Max/ultra studio, please!



Attachment Image
Score: 12 Votes (Like | Disagree)
Thalesian Avatar
13 months ago
This is anecdotal, but I got a M1 Ultra a couple years back to test out training some large LLM models that wouldn’t fit on NVIDIA chips like an RTX 6000 Ada. The latter has 48Gb VRAM, while the M1 Ultra has ~98Gb VRAM effectively, albeit at much slower training speeds.

It did fine for a few models, but then something bizarre happened - anything with an odd numbered batch size returned only infinite gradients and nan losses. Even numbered batch sizes could kind of train, but gradients exploded frequently. I couldn’t replicate this on my NVIDIA hardware or even a Mac M3 Max chip.

Only a hypothesis on my end, but I worry that the dye connection between chips is fragile and prone to error, particularly with these demanding high throughput actions. This can lead to otherwise normal Mac behavior, but render it useless with AI applications. My Mac M1 is still under Apple Care, but I don’t know how to even begin to describe the problem to Apple support.
Score: 10 Votes (Like | Disagree)
turbineseaplane Avatar
13 months ago

Apple maybe realized there's not enough demand for an Extreme chip to justify the cost of design and production.
Potential buyers of Extreme chip machines simply can't trust Apple to support them and their needs.

They've rug pulled these users over and over, and the vast majority have moved on with no interest in coming back to this sort of "relationship"

The onus is on Apple to ever show the world it can stay focused and committed to long term support that truly high end pro users demand and need.
Score: 8 Votes (Like | Disagree)
PsykX Avatar
13 months ago
Without a different chip, the Mac Pro is dead to me :

The Mac Pro (base model) is 63% more expensive than Mac Studio.
The Mac Pro is 4.7X heavier than Mac Studio.
The Mac Pro is 14.4X bigger than Mac Studio.

The Mac Pro is exactly as powerful as Mac Studio.

I mean, it was already a niche computer before, now it's a niche of a niche.
Score: 8 Votes (Like | Disagree)