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Nvidia is proposing a beast of a CPU system for Windows PCs

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Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#41

Is it really unified memory? AMD Strix Halo is "unified" but you still have to allocate memory separately for cpu vs gpu. Apple Silicon is true unified memory.

For local models, the useful part is not just having 128GB attached to the package. It is whether the GPU can practically use that memory without the usual VRAM-style constraints

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#42
post #38

Here is the press release for the actual machine: https://nvidianews.nvidia.com/news/nvidia-microsoft-windows-... I have been somewhat surprised at the lack of commentators observing that this is Microsoft and above all NVIDIA launching a device that is fundamentally at odds with the metered cloud model of AI. When you look at the other announcements and murmurings (better offline BYOK for Copilot, talk of an unmeter…

Maybe. Or they are simply hedging their bets.

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#43
post #13

> I am not sure how many people will run AI models locally. It still seems like a niche application to me. Bill Gates had a quote some years ago... People have still not learned how fast we improve our tech and how much cheaper thing gets I guess :)

Memory isn’t getting cheap soon, and you need a lot of it for local models

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#44
post #15

"I am not sure how many people will run AI models locally. It still seems like a niche application to me. However, it will make decent machines to play video games." I don't know who will be the winner but with some of the recent releases from gemma it seems more probable that you may run some models locally if only from a cost perspective, not even considering business security. Not sure how this type of architectur…

> "Ranked in the top 2% of scientists globally (Stanford/Elsevier 2025) and among GitHub's top 1000 developers" - side note but this guy puts this everywhere, gives me probably the inverse of what he is marketing for. Lol yeah seriously, that stinks "I ask AI to generate a huge amount of bullshit and upload it to pad irrelevant stats". Absolute loser.

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Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#45

Are their enterprise orders slowing down? Why use precious maxed out fab capacity on consumer stuff when it could be an enterprise chip?

It already is an enterprise chip. This is about Microsoft not having the equivalent of an M3 Max or whatever laptop.

And maybe for NVIDIA and MS it is also about them quietly betting that local models are, in fact, going to be good enough for most tasks pretty soon.

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#46
post #8

Does this person know that this is the same GB chip in the DGX Spark? It isn't some proposed thing, it's a chip loads of people have on their desk right now, and there are endless benchmarks of it. Decent single core (a long ways from Apple level, but decent), but it makes up for it in cores to provide M5 level performance, CPU wise. Memory bandwidth it is kind of starved, at 1/6th many GPUs. They got Microsoft to cu…

This is probably the better way to frame it: not "Nvidia is proposing a new CPU system" but "Nvidia is trying to move an existing GB/Spark-class platform into a Windows PC form factor"

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#47

Are their enterprise orders slowing down? Why use precious maxed out fab capacity on consumer stuff when it could be an enterprise chip?

It uses LPDDR5X instead of VRAM and will still sell for a premium while pushing their presence even further in every side of the AI market. This was one area AMD was ahead in and now Nvidia is probably better off making this to compete on that front while still being better off than making a 5090.

That doesn't answer the question. If the high margin enterprise GPUs are saturating the fab capacity you wouldn't expect them to be pushing this. But IIRC those all have oodles of integrated HBM at this point so I wonder if fab capacity for that has become a bottleneck.

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#48

Is it really unified memory? AMD Strix Halo is "unified" but you still have to allocate memory separately for cpu vs gpu. Apple Silicon is true unified memory.

yes, but more due to OS limitations than hardware. You can use their GTT which is then _true_ UMA where GPU can grab whatever it wants from the memory pool.

This isn't the first time we have UMA on the PC, btw. When SGI did their PC workstations, their 320 and 540 PC workstations had what they called Cobalt graphics chipset and crossbar with their IVC architecture. They bypassed AGP at the time completely. It was quite unique to see strict UMA on a PC. Haven't seen it since until these new systems we're seeing now on PCs and Mac.

Re: Nvidia is proposing a beast of a CPU system for Windows PCs

#49

Is it really unified memory? AMD Strix Halo is "unified" but you still have to allocate memory separately for cpu vs gpu. Apple Silicon is true unified memory.

Memory bandwidth is what matters, unified or otherwise. Discrete GPUs don't have unified memory either.
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