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Apple Mac Studio with M1 Ultra review: A workstation-class upgrade for iMac and Mac Mini users

The Mac Studio proves that Apple Silicon, and the M1 Ultra in particular, can deliver genuine workstation performance and gives the professional end of Apple's desktop range a welcome shot in the arm.
Written by Cliff Joseph, Contributing Writer
Apple Mac Studio

Apple Mac Studio: an M1 Max- or M1 Ultra-powered 'Mac Mini on steroids'.

Image: Cliff Joseph / ZDNet

Apple certainly knows how to keep a secret. Internet rumours surrounding Apple's 8 March event centred around a second-generation M2 processor, which would feature in a new MacBook Pro, Mac Pro, MacBook Air and/or Mac Mini. What the company actually came up with was another iteration of its existing M1 range -- the M1 Ultra, which combines two 10-core M1 Max chips to create a 20-core SoC (system-on-a-chip) colossus. 

And rather than using the M1 Ultra to upgrade an existing Mac, Apple came up with an entirely new design, called the Mac Studio. Apple also discontinued the Intel-based 27-inch iMac at the same time, making it clear that the Mac Studio, along with the new 27-inch Studio Display, was aimed at the many designers and creative users who have traditionally relied on the iMac as their main desktop system.


Apple Mac Studio

4.5 / 5
Very good

pros and cons

  • Compact design
  • Workstation-class performance
  • Good connectivity
  • Runs cool and quiet
  • Expensive
  • No internal expansion or user upgrades
  • Monitor, mouse and keyboard are extra-cost items

Design & features

Available with either an M1 Max or M1 Ultra processor, the design of the Mac Studio is both strikingly new and instantly familiar, looking rather like a Mac Mini on steroids. It was instantly dubbed the 'Mac Mini Pro' by many Apple watchers, while the brave souls at iFixit described it as "more than a Mac Mini, but not quite a Mac Pro", following a recent teardown

Like the Mac Mini, the Mac Studio is sold without a monitor, mouse or keyboard. It has the same compact footprint as the Mac Mini, measuring 197mm (7.7 inches) square. The difference, of course, is that the Mac Studio stands considerably taller, at 95mm (3.7 inches), compared to the low-profile 36mm (1.4 inches) of the Mac Mini. Much of that extra bulk is devoted to a more powerful cooling system that can accommodate the heat generated by the M1 Max and Ultra processors. However, Apple has also improved the Mac Studio's connectivity to meet the needs of professional users. 

Apple Mac Studio: ports and slots

The Mac Studio has plenty of ports, front and back, but you can't upgrade any internal components.

Images: Cliff Joseph / ZDNet

There are four Thunderbolt 4 ports on the back panel, and one HDMI connector, with the multi-core GPUs provided by the M1 Max (24-32 cores) and Ultra (48-64 cores) allowing the Mac Studio to support four of Apple's 6K Pro Displays and one 4K display. The back panel also houses two USB-A ports, 10-Gigabit Ethernet, and a 3.5mm headphone socket.  

And, in a break with Apple tradition, the Mac Studio even has some additional ports on its front panel -- so you no longer have to stand up and reach behind the Mac to plug in a memory stick or an SD card. If you opt for a top-end Mac Studio with the M1 Ultra processor then you get an SDXC card slot and two additional Thunderbolt 4 ports (supporting speeds of up to 40Gb/s), while the M1 Max version provides two USB-C ports (up to 10Gb/s) instead.

But, of course, it's the M1 processors inside the Mac Studio that really set it apart from the more compact Mac Mini. As mentioned, the Mac Studio is available with either an M1 Max or M1 Ultra, the latter providing a 20-core CPU, 48 or 64 GPU cores, and a 32-core Neural Engine.

Apple Mac Studio: specifications summary

The top-end M1 Ultra is essentially two M1 Max chips bolted together using Apple's on-die UltraFusion architecture.

Image: Apple

Bolting two M1 Max processors together isn't a simple matter, so rather than connect them via the motherboard Apple has developed an on-die interconnect technology called UltraFusion, which allows MacOS to simply treat the M1 Ultra as a single processor. This means that software developers don't have to rewrite their applications in order to utilise the M1 Ultra's twin processors, allowing the Mac Studio to really hit the ground running.

The M1 Max doesn't generate as much heat as the M1 Ultra, so it only requires an aluminium heat-sink, which results in a total weight of 2.7kg (5.9lbs). However, the greater power of the M1 Ultra requires a copper heat-sink, increasing the weight to 3.6kg (7.9lbs). Even so, that's not much heavier than a large 16- or 17-inch laptop, and Apple is understandably proud of the fact that it has designed a desktop workstation that can fit into a backpack.  

Apple Mac Studio: cooling system

Despite the compute power packed into its compact chassis, the Mac Studio runs cool and quiet thanks to a thermal design that includes double-sided blowers, precision airflow channels and over 4,000 perforations on the back and bottom of the enclosure.

Images: Apple

The elephant on the desktop, though, is the fact that -- yet again -- Apple has designed a 'pro' desktop computer with absolutely no internal expansion ports.

We've been here before, of course, when Apple produced the equally striking 'trashcan' Mac Pro in 2013. That black, cylindrical design drew gasps when it was first unveiled, but it soon became clear that Apple had designed itself into a corner, and it spent years developing the current Intel-based Mac Pro with its battery of expansion slots and drive bays. It's telling that the Mac Pro remains on sale, while the 27-inch iMac, as noted above, has now been discontinued. 

Price & options

There's a huge price difference between the two versions of the Mac Studio, with the M1 Max model starting at $1,999. That price includes an M1 Max with 10-core CPU, 24-core GPU, and 16-core Neural Engine, along with 32GB of integrated 'unified' memory and 512GB of solid-state storage. 

However, opting for an M1 Ultra instantly doubles the price to $3,999. This provides you with a 20-core CPU (3.2GHz), 48-core GPU and 32-core Neural Engine, along with 64GB of memory and a 1TB SSD. However, you can also upgrade the M1 Ultra to provide 64 GPU cores for an extravagant $1,000 more, while doubling the memory to 128GB costs an additional $800, bringing the total price to $5,799.  

It's also possible to purchase the Mac Studio with up to 8TB of solid-state storage, which adds a hefty $2,200, bringing the total price to $7,999. However, most users will likely prefer to use more affordable external drives for additional storage. 

Arguably, the entry-level Mac Studio with M1 Max represents a direct replacement for the discontinued 27-inch iMac but, of course, the price of the iMac included an integrated 5K display, whereas the Mac Studio doesn't even include a keyboard or mouse, let alone a monitor. If you opt for Apple's new Studio Display then you'll have to budget at least $1,599 for that, although there are many less expensive 4K and 5K displays available from other manufacturers


Benchmarking Macs that use Apple's home-grown M1 processors remains problematic, as there are few cross-platform synthetic benchmarks that can compare M1 Macs with Windows PCs. However, we do have Geekbench 5 benchmarks for the 16-inch MacBook Pro with M1 Max processor, which makes for an interesting comparison with the top-of-the-range M1 Ultra that powered our Mac Studio review unit. 

When running the Geekbench 5 CPU benchmark, the Mac Studio and MacBook Pro achieved identical single-core scores of 1790. However, the Mac Studio's 20-core M1 Ultra leapt ahead on multi-core performance, scoring 24,050 -- almost twice the score of 12,780 for the MacBook Pro's 10-core M1 Max. 

Here are these numbers compared to Geekbench figures for other M1-based Macs, along with the Intel-based Mac Pro and (now-discontinued) 27-inch iMac: 

Apple Mac Studio: Geekbench 5 CPU scores
Data: Geekbench & Cliff Joseph / Chart: ZDNet

The Geekbench 5 graphics performance test (Compute) didn't produce the same level of improvement: the M1 Ultra-based Mac Studio scored exactly 100,000 using the Metal API -- around 53% higher than the 64,950 score delivered by the M1 Max-based MacBook Pro. Under the 3DMark WildLife Extreme graphics benchmark, the MacBook Pro achieved 121 frames per second (fps), while the Mac Studio was 72% faster, breezing ahead to 209fps.

SEE: The best iPad accessories: Docks, hubs, and more for your tablet

Geekbench 5 Compute also allows for a cross-platform comparison, using the OpenCL API. This puts the M1 range -- even the Ultra -- a long way behind Nvidia's high-end GeForce RTX 3090:

Apple Mac Studio: Geekbench 5 GPU scores
Data: Geekbench / Chart: ZDNet

OpenCL clearly doesn't show Apple Silicon in its best light, and to get the best GPU performance from the M1 Max and Ultra, you'll want to seek out applications like Adobe Photoshop that run natively with Metal on Macs.

Despite the workstation levels of performance provided by the M1 Ultra, the fans in the Mac Studio were barely audible, even when running the demanding 3DMark graphics tests. 


The Mac Studio is one of those designs that only Apple could come up with, providing a unique combination of power and elegance -- as well as frustrations such as its lack of internal expansion and user upgrades. Some users will mourn the loss of the all-in-one 27-inch iMac, but the Mac Studio proves that Apple Silicon can deliver genuine workstation performance and gives the professional end of Apple's desktop range a welcome shot in the arm.

Should you buy the Mac Studio?

The Mac Studio is a powerful and compact workstation-class desktop, particularly when equipped with the top-end M1 Ultra chip. While the expanded collection of ports compared to the Mac Mini is very welcome, the lack of support for upgrades to the RAM, internal SSD storage or GPU means you'll need to be sure that what you specify at purchase time will see you through the system's expected lifetime.

Many creative professionals will be happy with a Mac Studio setup, valuing the combination of power and a small form factor. But many others will hanker for the full tower desktop experience. At the moment you get that with the 2019-era Intel-based Mac Pro, but at its March 8 event Apple's senior VP of hardware engineering John Ternus dropped a big hint about a forthcoming upgrade, stating that the Mac Studio makes "our transition nearly complete with just one more product to go, Mac Pro...But that is for another day".

Rumours about this upcoming M1-based Mac Pro's specification revolve around an even more powerful chip -- possibly a doubled-up M1 Ultra with 40 CPU cores, up to 128 GPU cores and up to 128GB of unified memory. If this happens, the M1 Mac Pro will doubtless break performance records all over again. But whether it will come in the existing form factor, and whether any accommodation will be made for expansion and customisation via slots and bays, remains to be seen.

Apple Mac Studio specifications

Chipset (SoC)

Apple M1 Max (10 CPU cores, 24-32 GPU cores, 16-core Neural Engine) • M1 Ultra (20 CPU cores, 48-64 GPU cores, 32-core Neural Engine)  

Memory bandwidth

400GB/s (M1 Max) • 880GB/s (M1 Ultra)  

RAM (unified memory)

32-64GB (M1 Max) • 64-128GB (M1 Ultra)  


512GB (M1 Max), 1TB, 2TB, 4TB, 8TB (M1 Max & Ultra)  


1x speaker, 3.5mm headphone jack, multi-channel audio support over HDMI  

Connections & expansion

Rear: 4x Thunderbolt 4 (DisplayPort, USB 4, USB 3.1), 1x RJ-45 Ethernet, 2x USB-A, 1x HDMI • Front: 2x USB-C (M1 Max), 2x Thunderbolt 4 (M1 Ultra), SDXC card slot  


Bluetooth 5.0, Wi-Fi 6 (802.11ax), 10Gbps Ethernet  

Dimensions (WxDxH)

19.7cm x 19.7cm x 9.5cm (7.7in. x 7.7in. x 3.7in.)  


M1 Max: 2.7kg (5.9lbs) • M1 Ultra: 3.6kg (7.9lbs)  


from $1,999 (M1 Max) • from $3,999 (M1 Ultra)


Peek Performance showcases the triumph of Apple silicon 

Apple M1 Ultra chip blows away the competition 

Mac Studio vs. Mac Pro and Mac mini: Apple delivers extreme power 

Apple's new Mac Studio: The Mac Mini grows up 

The best Macs: Is the Mac Studio or MacBook Pro right for you? 

Read more reviews

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