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It's NUMA, just like usual. The difference is the exact topology, and the real difference in latency (which changes the cost function of accessing from a different node).



The CCXes aren't NUMA, they all have the same access to memory, no system would show multiple NUMA domains on a desktop Ryzen.

Only Threadripper and EPYC are NUMA.


Zen 2 drops the NUMA because of the single I/O die with memory controller right?


I can't find confirmation, but that would make sense, single-socket EPYC and TR with Zen2 should be UMA


> Only Threadripper and EPYC are NUMA.

Yeah, I meant this. I don't use Ryzen so I think of Zen as being Threadripper and EPYC.




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