M1 Ultra Mac Studio is 2 Pounds Heavier Than M1 Max Version Due to Thermal Differences

The Mac Studio comes in two varieties, one with the same M1 Max chip used in the 2021 MacBook Pro models and a second featuring an M1 Ultra chip, which is two interconnected ‌M1 Max‌ chips that operate as a single chip.

mac studio ports
Following yesterday's event, Apple's technical specifications for the ‌Mac Studio‌ went live, and there was a curiosity - the ‌M1 Ultra‌ version of the ‌Mac Studio‌ is a full two pounds heavier than the ‌M1 Max‌ version, and it wasn't clear why. Apple today provided an explanation to The Verge, and it turns out the two machines have a different thermal setup.

According to Apple, the ‌M1 Ultra‌ has a copper thermal module, while the ‌M1 Max‌ has an aluminum heatsink. Copper is heavier than aluminum, hence the weight difference. The ‌M1 Max‌ ‌Mac Studio‌ weighs in at 5.9 pounds, while the ‌M1 Ultra‌ version is 7.9 pounds.

They have the same 370W power supply. The additional weight is due to M1 Ultra having a larger copper thermal module, where as M1 Max has an aluminum heatsink.

Different thermal management setups is not a surprise given the power of the ‌M1 Ultra‌ vs. the standard ‌M1 Max‌. The ‌M1 Ultra‌ includes a 20-core CPU and up to a 64-core GPU for double the computing power of the ‌M1 Max‌. Despite the high-powered chip, Apple has said that the ‌Mac Studio‌ is able to run quietly, with an architecture that that pulls air in through the airflow channels on the bottom using double-sided blowers and pushes it out through additional perforations on the back of the chassis.

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

Popular Stories

iPhone Pocket Short

iPhone Pocket is Now Completely Sold Out Worldwide

Tuesday November 25, 2025 7:16 am PST by
Apple recently teamed up with Japanese fashion brand ISSEY MIYAKE to create the iPhone Pocket, a limited-edition knitted accessory designed to carry an iPhone. However, it is now completely sold out in all countries where it was released. iPhone Pocket became available to order on Apple's online store starting Friday, November 14, in the United States, France, China, Italy, Japan, Singapore, ...
Netflix Smaller 4

Netflix Kills Casting From Its Mobile App to Most Modern TVs

Monday December 1, 2025 4:36 am PST by
Netflix has quietly removed the ability to cast content from its mobile apps to most modern TVs and streaming devices, including newer Chromecast models and the Google TV Streamer. The change was first spotted by users on Reddit and confirmed in an updated Netflix support page (via Android Authority), which now states that the streaming service no longer supports casting from mobile devices...
Cyber Week Deals 2025

Best Cyber Week Apple Deals Include Big Discounts on AirPods, Apple Watch, and More

Sunday November 30, 2025 7:33 am PST by
Cyber Week is here, and you can find popular Apple products like AirPods, iPad, Apple Watch, and more at all-time low prices. 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 you click a link and make a purchase, we may receive a small payment, which helps us keep the site running. Specifically,...
Sad Siri Feature

Apple AI Chief John Giannandrea Retiring After Siri Delays

Monday December 1, 2025 2:16 pm PST by
Apple AI chief John Giannandrea is stepping down from his position and retiring in spring 2026, Apple announced today. Giannandrea will serve as an advisor between now and 2026, with former Microsoft AI researcher Amar Subramanya set to take over as vice president of AI. Subramanya will report to Apple engineering chief Craig Federighi, and will lead Apple Foundation Models, ML research, and ...
studio display purple february

M5 iPad Pro Could Hint at New Studio Display Feature

Sunday November 30, 2025 10:30 am PST by
The updated specs of the M5 iPad Pro may point toward a major new feature for Apple's next-generation Studio Display expected in early 2026. Apple's latest iPad Pro debuted last month and contains one display-related change that stands out: it can now drive external monitors at up to 120Hz with Adaptive Sync. The feature should deliver lower latency, smoother motion, and fewer visual...
New Intel Logo

Apple and Intel Rumored to Partner on Mac Chips Again in a New Way

Friday November 28, 2025 7:33 am PST by
While all Macs are now powered by Apple's custom-designed chips, a new rumor claims that Apple may rekindle its partnership with Intel, albeit in a new and limited way. Apple supply chain analyst Ming-Chi Kuo today said Intel is expected to begin shipping Apple's lowest-end M-series chip as early as mid-2027. Kuo said Apple plans to utilize Intel's 18A process, which is the "earliest...
iphone black friday gold

The Best Black Friday iPhone Deals Still Available

Friday November 28, 2025 6:24 am PST by
Cellular carriers have always offered big savings on the newest iPhone models during the holidays, and Black Friday 2025 sales have kicked off at AT&T, Verizon, T-Mobile, and more. Right now we're tracking notable offers on the iPhone 17, iPhone 17 Pro, iPhone 17 Pro Max, and iPhone Air. For even more savings, keep an eye on older models during the holiday shopping season. Note: MacRumors is...
maxresdefault

The MacRumors Show: Apple's Big Plans for iPad Mini 8

Friday November 28, 2025 8:39 am PST by
On this week's episode of The MacRumors Show, we talk through the latest rumors about Apple's upcoming iPad mini 8. Subscribe to The MacRumors Show YouTube channel for more videos The next-generation version of the iPad mini is expected to feature an OLED display, as part of Apple's plan to expand the display technology across many more of its devices. Apple's first OLED device was the Apple...
maxresdefault

iPhone Fold: Launch, Pricing, and What to Expect From Apple's Foldable

Monday December 1, 2025 3:00 am PST by
Apple is expected to launch a new foldable iPhone next year, based on multiple rumors and credible sources. The long-awaited device has been rumored for years now, but signs increasingly suggest that 2026 could indeed be the year that Apple releases its first foldable device. Subscribe to the MacRumors YouTube channel for more videos. Below, we've collated an updated set of key details that ...

Top Rated Comments

Danoc Avatar
49 months ago
They should have named it Big Mac.
Score: 45 Votes (Like | Disagree)
DHagan4755 Avatar
49 months ago
This should answer the question of whether the M1 Ultra will end up in a laptop...
Score: 26 Votes (Like | Disagree)
kingalien Avatar
49 months ago
That's $1,000 a pound difference between the models!!
Score: 22 Votes (Like | Disagree)
BlueCreek Avatar
49 months ago

Interesting that they supply the same 370W power supply for both. Perhaps it is cheaper for them to just make 1 power supply. That's how they're able to pass the savings on to the customer.
Apple > savings > customer. Are not three words I would associate together.
Score: 21 Votes (Like | Disagree)
Brandon42 Avatar
49 months ago

That's $1,000 a pound difference between the models!!
It is an investment. When copper hits $1,250 a pound you will be kicking yourself for not buying one.

/s
Score: 19 Votes (Like | Disagree)
ddtmm Avatar
49 months ago
Interesting that they supply the same 370W power supply for both. Perhaps it is cheaper for them to just make 1 power supply. That's how they're able to pass the savings on to the customer.
Score: 18 Votes (Like | Disagree)