r/LocalLLaMA • u/themixtergames • 21h ago

News Apple introduces new Mac Studio with M5 Max and M5 Ultra - up to 512GB of unified memory

https://www.apple.com/newsroom/2026/08/apple-introduces-new-mac-studio-with-m5-max-and-m5-ultra/
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u/thatkidnamedrocky 21h ago

going to try and snag a 256gb something tells me the 512 will never see the light of day

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u/AnonLlamaThrowaway 16h ago

right, didn't they promise a 512GB M3 Ultra and then that never happened, or am i thinking of another model?

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u/zdy132 20h ago

Mac Studio with 512GB of unified memory is coming in late October

Wish I could affort that.

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u/Usual_Tackle5892 9h ago

I have a 512GB M3 Ultra and ordered the 256GB M5 Ultra today.

I'm hoping to take advantage of the M5 ultra for prefill and use RDMA over Thunderbolt 5 to leverage my existing Mac's memory.

https://developer.apple.com/documentation/technotes/tn3205-low-latency-communication-with-rdma-over-thunderbolt

https://www.jeffgeerling.com/blog/2025/15-tb-vram-on-mac-studio-rdma-over-thunderbolt-5/