Apple M5 Ultra cluster hits 4.8TB/s bandwidth, rivaling data center GPUs
awnihannun · x · 2026-08-26
Exo partnered with Apple to implement low-latency RDMA over Thunderbolt 5, enabling Mac clusters to run massive models like Kimi K3 and GLM-5.3 at API speeds. A cluster of 4 x M5 Ultra Mac Studios scales to 4.8TB/s aggregate memory bandwidth, a speed previously only achievable with data center GPUs. Apple Silicon's superior memory unit economics and power efficiency make the 'data center on every desk' vision possible.
Related event: Apple M5 Ultra and Exo deliver 4.8TB/s desktop-scale clustering(2 posts)→
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