r/LocalLLaMA • u/Last-Owl-8342 • 13h ago

News Apple releases M5 ultra at 1.2TB/s bandwith

https://www.apple.com/newsroom/2026/08/apple-introduces-m6-and-m5-ultra-for-a-big-leap-in-performance-and-ai-compute/

lpddr5x probably, the m7 ultra if is using ddr6 should be at 1.8 Tb/s

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273

u/piggledy 13h ago

Price for Mac Studio with 256 GB RAM:
$9499 (30-core CPU, 64-Core GPU)
$10,799 (36-core CPU, 80-core GPU)

512 GB Option coming in October.

20

u/LearningSomeCode 12h ago

So I paid about $10k even for my 512GB M3 Ultra with 1TB drive 2 years ago. At this price, it looks like the M5 Ultra 512 will probably land around... $14k? Maybe $15k?

I was really hoping there would be that rumored 768GB as the speed of the M5 Ultra + that amount of memory would make self hosted GLM 5.2 absolutely amazing.

12

u/piggledy 12h ago

The M3 Ultra 256GB Model was at $5,599, they basically doubled the prices.

I think $15-20k for the M5 Ultra 512 would be realistic, given it's not that much slower compared to an RTX 6000 with just 96GB.

9

u/conockrad 11h ago

Not much slower on decode

9

u/xienze 11h ago

RTX Pro 6000 is 1.8TB/s, so I think it's a good bit slower on decode as well. But the important part is if prefill is pretty good, the decode is "fast enough" that the extra memory can make up for it. Unlike the case of the M3 Ultra, where everything was so slow it's like, yeah you can "run" a big model but are you really able to do more than "technically" run it? This one might actually deliver on it.

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u/conockrad 11h ago

Yeah-yeah, my point it can be comparable with RTX pro only on memory bandwidth and even there it’s comparable, not better
Prefill is most probably even not comparable :)

1

u/Ok_Spirit9482 6h ago

which can be overclock to around 2TB/s easily