Wouldn't PCI as a "memory bus" just be an SSD connected to the PCI bus setup as ... | Hacker News

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avar on April 4, 2024 | parent | context | favorite | on: PCIe 7.0 Draft 0.5 Spec: 512 GB/s over PCIe x16 On...

Wouldn't PCI as a "memory bus" just be an SSD connected to the PCI bus setup as a swap space, which you can already do?

nolist_policy on April 4, 2024 [–]

No, NVMe SSDs are not memory mapped. While they max out at 14GB/s - giving you 56GB/s per PCIe 5.0 x16 slot - emulating memory/swapping is expensive.

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