Originally I had planned to skip Pcie4 in favour of the upcoming PCIe5, but just been told IcyDock are actually going to ship out my replacement MB699VP-B V2 today (trade up due to incompatibility issues) so I find myself with a PCIE 4 capable NVME backplane all of a sudden
1. Are there any advantages on running Pcie4 NVMEs on a PCIE3 bus (eg via onboard Occulink port)?
O/C it should max out the x4 link (opposed to PCIe3 NVME drives), but are there protocol advantages too (like SAS3 > SAS2) ?
2. I assume if there are PCI4 to 3 adapters in existence (x4->x8, x8->x16) they are slow as hell, hugely expensive and not intended for the mass market?
Bonus Question - are the Supermicro BPN XXX- A-N4 Backplanes PCIE4 capable, i.e are they just passing through whatever they get similar for SAS/SATA or are there active parts on it?
Thanks
1. Are there any advantages on running Pcie4 NVMEs on a PCIE3 bus (eg via onboard Occulink port)?
O/C it should max out the x4 link (opposed to PCIe3 NVME drives), but are there protocol advantages too (like SAS3 > SAS2) ?
2. I assume if there are PCI4 to 3 adapters in existence (x4->x8, x8->x16) they are slow as hell, hugely expensive and not intended for the mass market?
Bonus Question - are the Supermicro BPN XXX- A-N4 Backplanes PCIE4 capable, i.e are they just passing through whatever they get similar for SAS/SATA or are there active parts on it?
Thanks