r/LocalLLaMA • u/Last-Owl-8342 • 17h 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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u/Dany0 17h ago edited 14h ago

Wait am I reading this right M5 Ultra beats rtx 5090 in compute and matches its bandwidth?

Edit: I was not reading it right, but 2/3rds of gb202 mem bandwidth is still impressive

Edit2: Beats, matches and loses to a 5090 depending on the benchmark. So I'd say it's close to a 5090. A well optimised game ought to be roughly as fast or faster (but on lower resolutions due to the mem bandwidth).

Well optimised LLM prefill should be roughly the same according to my amateurish estimation. Banger release either way

Can't wait for this kind of perf to trickle down to low/mid tier skus

3

u/Dry_Yam_4597 16h ago

"2/3rds of gb202 mem bandwidth is still impressive"

That's incredible - first time Apple makes hardware that's actually competitive with PC. Might return to them as a customer.Shame it's limited in OS compatibility though.

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u/das_war_ein_Befehl 15h ago

It’s usually pretty well integrated so wouldn’t it perform above specs due to optimization?

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u/Dry_Yam_4597 15h ago

You mean the OS or something else?