Skylake X running PCIe 4.0 x 16 native.     Skylake running great on 16GT/s PCIe 4.0 x 16.   No need CPU upgrade for PCIe 4.0 x 16.  

 NEW ASMEDIA 3142/2142 Firmware 211118_70_02_40 DATE 2023-05-16 Release

     

According to Igor's lab article. https://www.igorslab.de/en/never-ending-story-intels-sapphire-rapids-may-come-in-12-stepping-scheduled-shipping-a-growing-failure-list-and-possible-availability-in-2023/Look like Sapphire Rapid going to be Delay Rapid...

Core i9 7980XE " SYNC ALL CORE OPTION " FROM MODDED 3601 BIOSwith Intel 02006D05 Microcode DATE 2021-11-13Testing under W11 22H2 25131.1000It was 4 years taken since 2018 after Intel disclosed Skylake X CPU SKUs vulnerable in many parts of Its micro ...