To those of you with an X670E motherboard, which are a few, I'd keep an eye on this:
Crucial Discovers Flaw in AMD X670E Motherboards: Gen 5 NVMe Slots Drop to Gen 1 Speeds, Cause Boot Issues
https://www.techpowerup.com/327243/crucial-discovers-flaw-in-amd-x670e-motherboards-gen-5-nvme-slots-drop-to-gen-1-speeds-cause-boot-issues
Memory and SSD maker Crucial noticed an uptick in support requests by users claiming that their Gen 5 or Gen 4 NVMe SSDs would drop to PCIe Gen 1 speeds, besides being unable to boot into Windows after a restart. Crucial then did some digging, and localized the issue to users with motherboards based on the AMD X670E chipset, AMD's flagship Socket AM5 platform chipset. While not a function of the chipset itself, it turns out that there is a flaw in the way AMD designed the PCI-Express I/O of the X670E platform, specifically the PCIe Gen 5-capable M.2 NVMe interfaces that are attached to the CPU, causing them to drop in speeds to Gen 1. This problem isn't surfacing on the AMD B650 or the B650E, or even the X670—it is oddly specific to the X670E, despite the Gen 5 M.2 NVMe slots not being wired to the chipset.
The article speculates about the cause, gives a temporal solution and states that MSI has already released a fix.
Please excuse my bad English.
Currently gaming on a PC with an i5-4670k@stock (for now), 16Gb RAM 1600 MHz and a GTX 1070
Steam / Live / NNID : jonxiquet Add me if you want, but I'm a single player gamer.
