Even the fastest (as in lowest latency) CXL memories claim a ~200ns latency (~4x... | Hacker News

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crest 9 months ago | parent | context | favorite | on: PCIe 7.0 Draft 0.5 Spec: 512 GB/s over PCIe x16 On...

Even the fastest (as in lowest latency) CXL memories claim a ~200ns latency (~4x worse than DDR5) and it wouldn't be free.

imtringued 9 months ago [–]

200ns latency for communicating with another CPU or GPU device is pretty good. Just imagine how many microseconds it would take to do all of this over ethernet.

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