Yeah: > I did give AMD the heads-up that it would be going live just after the Cascade Lake launch. They did not sanction this article (indeed, they will not b

Yeah: > I did give AMD the heads-up that it would be going live just after the Cascade Lake launch. They did not sanction this article (indeed, they will not be overly excited to see it is live.) That seems to justify some doubts. PCIe 4.0 support has got to cost some die area/power, and not many PCI devices will support it at first. That might point towards starting with a mix of 3.0 and 4.0 lanes. If they did upgrade all lanes, and some devices show up, could be cool for some bandwidth-hungry GPU and/or HPC-networking use cases. Or for servers that wanted to load up on any kind of compatible device (SSDs, whatever): you can fit more 4.0 x4 than 3.0 x8 anythings in a given number of lanes. Still think we'll have to wait a gen, though.