New Mac Studio Can Be Clustered Together for Faster AI Performance - MacRumors
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New Mac Studio Can Be Clustered Together for Faster AI Performance

mac studio purpleMultiple new Mac Studio units can be clustered together over Thunderbolt 5 and RDMA (remote direct memory access), creating a shared memory pool for running larger AI models.

If four Mac Studio systems are clustered together, Apple says they can deliver 3x faster AI inference than running the same task on a single system, with the shared memory pool helping to load the largest and most demanding frontier-class open-weight models available today.

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Top Rated Comments

2 hours ago at 06:01 am
C'mon Macrumors bot/editor... do better.

How is this different than the M3 Ultra/M4 Max Studio models that also use RDMA?
Score: 10 Votes (Like | Disagree)
turbineseaplane Avatar
1 hour ago at 06:33 am
This article sponsored by Rocket Mortgage ... which you'll need to afford the Mac Studio cluster setup.

"Shopping for a new Mac? We've got great rates on HELOCs. Call today!"
Score: 8 Votes (Like | Disagree)
2 hours ago at 06:16 am

But what kind of AI would you run on it without CUDA? If you just get any old gaming PC with some nVidia GPU for a fraction of the price, you'll be running AI maybe a hundred times faster.

There was a time when Macs supported nVidia GPUs... There was also a time when external GPUs seemed to be a thing. Wouldn't it be better if you could just plug in an external nVidia GPU with CUDA and just run whatever you want on whatever you want orders of magnitude faster and for a fraction of the price?

The neural engine is great for Siri and genmoji I guess but you can't do any real work with it no matter how fast is, no matter how much RAM it has.
1.2 TB/s of bandwidth is faster than any consumer GPU available today like 4090 etc. I don;t know what you've been drinking.
Prompt processing is also many times faster thanks to their compute improvements.
Score: 5 Votes (Like | Disagree)
Soba Avatar
43 minutes ago at 07:03 am
A few notes that probably should have been mentioned in the article:


* RDMA applications are not limited to AI models. RDMA is also useful in areas like scientific/grid computing, big data, etc.
* RDMA on macOS was introduced in Tahoe 26.2 and should work on any Apple Silicon Mac with Thunderbolt 5. It's not limited to the 2026 Mac Studio.
* You can cluster two, three, four, or even five Mac Studios together (though if you do five, you need to use a ring topology, which significantly hurts performance since it becomes impossible to directly connect each Mac Studio to every other Studio because of the number of available Thunderbolt ports). I'm not clear on whether you can do more than five machines; the developer documentation doesn't address this. I've also read that clustering more than two systems is buggy, but this will surely improve as time goes on.

RDMA is niche for now, but it's worth pointing out the very low power consumption on these systems. Running a cluster of Mac Studios could potentially save you big money over time when you consider electricity and cooling. We've come a long way since XGrid ('https://en.wikipedia.org/wiki/Xgrid') and the Virginia Tech System X supercomputing cluster ('https://en.wikipedia.org/wiki/System_X_(supercomputer)').
Score: 4 Votes (Like | Disagree)
ErneX Avatar
2 hours ago at 06:07 am
This was possible with the previous model…
Score: 3 Votes (Like | Disagree)
2 hours ago at 06:06 am
Can you imagine a Beowulf cluster of these?

Oh wait, that’s exactly what this is! 🎉
Score: 3 Votes (Like | Disagree)