Due to issues with some motherboards
AMD has confirmed that older chipset motherboards, based on X470, X370, B450, B350 and A320 chipsets, will lack support for PCIe 4.0, as there could be some issues with some motherboards.
It even makes Intel Optane interesting
According to a video posted recently online, it appears that it took AMD and StoreMI software to make the Intel Optane shine and pretty much make the experience as best as possible.
ASRock, Asus, Biostar, Gigabyte, and MSI join the party
As expected, since AMD has now officially lifted the NDA (non disclosure agreement) from its second generation Ryzen 2000-series Pinnacle Ridge CPUs and the shiny new X470 chipset, most, if not all motherboard makers have announced their own versions, with some launching more than one motherboard to cover a wider market range.
Running on Asus Crosshair VII Hero motherboard
A new and upcoming Ryzen 2000 series CPU, the Ryzen 5 2600 was seen in SiSoft Sandra database, rocking a 3.4GHz base clock on those 12nm Zen+ cores, and running on yet to be announced Asus Crosshair VII Hero motherboards.
Better VRM, two M.2 slots and more
Although it is scheduled to launch in April, together with the second generation Ryzen desktop CPUs, AMD's upcoming X470 chipset motherboard has already been seen at the CES 2018 show in Las Vegas.