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Apple M3 Ultra

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Re: Apple M3 Ultra

#311

Lots of AI HW is focused on RAM (512GB!). I have a cost-sensitive application that needs speed (300+ TOPS), but only 1GB of RAM. Are there any HW companies focused on that space?

Just buy any gaming card? Even something like the Jetson AGX Orin boasts 275 TOPS (but they add in all kind of different subsystems to reach that number).

Re: Apple M3 Ultra

#312
Wow, incredible. I told myself I’d stop waffling and just buy the next 800gb/s mini or studio to come out, so I guess I’m getting this.

Not sure how much storage to get. I was floating the idea of getting less storage, and hooking it up to a TB5 NAS array of 2.5” SSDs, 10-20tb for models + datasets + my media library would be nice. Any recommendations for the best enclosure for that?

Re: Apple M3 Ultra

#313

Earlier quoted context omitted.

Keep in mind the minimum configuration that has 512GB of unified RAM is $9,499.

I cannot express how dirt cheap that pricepoint is for what's on offer, especially when you're comparing it to rackmount servers. By the time you've shoehorned in an nVidia GPU and all that RAM, you're easily looking at 5x that MSRP; sure, you get proper redundancy and extendable storage for that added cost, but now you also need redundant UPSes and have local storage to manage instead of centralized SANs or NASes. F…

I assume there is a very good reason why AMD and Intel aren't releasing a similar product.

Re: Apple M3 Ultra

#314
post #258

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No native docker support, no headless management options (enterprise strength), Limited QoS management, lack of robust python support (out of the box), interactive user focused security model.

> No native docker support Honest question: why do you want this in MacOS? Do you understand what docker does? (it's fundamentally a linux technology, unless you are asking for user namespaces and chroot w/o SIP on MacOS, but that doesn't make sense since the app sandbox exists). MacOS doesn't have the fundamental ecosystem problems that beget the need for docker. If the answer is "I want to run docker containers bec…

Docker Desktop now offers an option to use the virtualization framework, and works pretty well. But you're still constantly running a VM because "docker is how devs work now right?". I agree with your comment.

Re: Apple M3 Ultra

#315
post #288

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If Apple supported Linux (headless) natively, and we could rack m4 pros, I absolutely would use them in our Colo. The CPUs have zero competition in terms of speed, memory bandwidth. Still blown away no other company has been able to produce Arm server chips that can compete.

What about serviceability? These come with soldered in ssd? That would be an issue for server use, Its too expensive to throw it away all for a broken ssd.

Nah, in many businesses, everything is on a schedule. For desktop computers, a common cycle is 4 years. For servers, maybe a little longer, but not by much. After that date arrives, it’s liquidate everything and rebuild.

Having things consistently work is much cheaper than down days caused by your ancient equipment. Apple’s SSDs will make it to 5 years no problem - and more likely, 10-15 years.

Re: Apple M3 Ultra

#317

Earlier quoted context omitted.

It is _not_ on die. It's soldered onto the package. There's a good reason it's soldered, i.e. the wide memory interface and huge bandwidth mean that the extra trace lengths needed for an upgradable RAM slot would screw up the memory timings too much, but there's no need to make false claims like saying it's on-die.

> RAM slot would screw up the memory timings Existing ones possibly but why not build something that lets you snap-in a BGA package just like we snap in CPUs on full sized PC mainboards?

The longer traces are the problem. They want these modules as physically close as possible to the CPU to make the timings work out and maintain signal integrity.

It's the same reason nobody sells GPUs that have user upgradable non-soldered GDDR VRAM modules.

Re: Apple M3 Ultra

#318
post #241

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The Mac Studio isn’t meant for data centers anyway? It’s a small and silent desktop form factor — in every respect the opposite of a design you’d want to put in a rack. A long time ago Apple had a rackmount server called Xserve, but there’s no sign that they’re interested in updating that for the AI age.

It's the Ultra chip, the same one that goes into the rackmount Mac Pro. I don't think there's much confusion as to who this is for. > there’s no sign that they’re interested in updating that for the AI age. https://security.apple.com/blog/private-cloud-compute/

Outside of extremely niche use cases, who is racking apple products in 2025?

Re: Apple M3 Ultra

#319

Earlier quoted context omitted.

Every single AI shop on the planet is trying to figure out if there is enough compute or not to make this a reasonable AI path. If the answer is yes, that 10k is a absolute bargain.

> that 10k is a absolute bargain The higher end NVidia workstation boxes won’t run well on normal 20amp plugs. So you need to move them to a computer room (whoops, ripped those out already) or spend months getting dedicated circuits run to office spaces.

Didn't really think about this before, but that seems to be mainly an issue in Northern / Central America and Japan. In Germany, for example, typical household plugs are 16A at 230V.

Re: Apple M3 Ultra

#320

Can someone explain what it would take for Apple to overtake NVIDIA as the preferred solution for AI shops? This is my understanding (probably incorrect in some places) 1. NVIDIA's big advantage is that they design the hardware (chips) and software (CUDA). But Apple also designs the hardware (chips) and software (Metal and MacOS). 2. CUDA has native support by AI libraries like PyTorch and Tensorflow, so works extra…

It's still boiling down to hardware and software differences.

In terms of hardware - Apple designs their GPUs for GPU workloads, whereas Nvidia has a decades-old lead on optimizing for general-purpose compute. They've gotten really good at pipelining and keeping their raster performance competitive while also accelerating AI and ML. Meanwhile, Apple is directing most of their performance to just the raster stuff. They could pivot to an Nvidia-style design, but that would be pretty unprecedented (even if a seemingly correct decision).

And then there's CUDA. It's not really appropriate to compare it to Metal, both in feature scope and ease of use. CUDA has expansive support for AI/ML primatives and deeply integrated tensor/SM compute. Metal does boast some compute features, but you're expected to write most of the support yourself in the form of compute shaders. This is a pretty radical departure from the pre-rolled, almost "cargo cult" CUDA mentality.

The Linux shtick matters a tiny bit, but it's mostly a matter of convenience. If Apple hardware started getting competitive, there would be people considering the hardware regardless of the OS it runs.

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