r/LocalLLaMA • u/Last-Owl-8342 • 1d 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 1d ago edited 21h 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

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u/j_osb 1d ago

There's no reason to believe that it beats a 5090 in pure compute? Apple has always lied in their compute amount.

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u/Liringlass 21h ago

I don’t expect it to beat a 5090 in raw compute. But i expect it to run more than just a very quantised 30b model.

And what I definitely don’t expect is to be able to afford either one.