Re:AMD Discloses Initial Zen 2 Details
by throwaway2048 on Sunday November 18, 2018 @06:27PM
(#18483073)
the incorporation of the IO chiplet is a sea change for processor tech. It means many physically separate core-chipsets get the same path to RAM and overcomes the many issues with NUMA, while avoiding massive and expensive cpu dies.
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The UMA benefit is a double-edged sword. Best-case RAM latency probably gets worse, all else being equal. But maybe they've made Infinity fabric faster enough in Zen2 to eliminate any additional latency compared against the local memory domain in Zen1.