Some users of AMD X670E motherboards are experiencing serious problems with PCIe 5.0 SSDswhich are downgraded to PCIe 1.0 speed, drastically reducing performance. The problem affects several brands of motherboards and SSD models.
The issue seems to be related to the AMD platform and the implementation of PCIe 5.0 slotsrather than specific hardware components. Crucial has confirmed that the issue persists across various motherboards and drives, and has also replicated it in its own test systems.
The root cause of the problems with the AMD X670E currently remains unknown.
The problem occurs when they are busy both the first PCIe 5.0 slot for graphics cards and the first M.2 slot with PCIe 5.0 x4 interface. In these cases, random crashes occur and some users cannot even start Windows. The system boots after several reboots, but sets the PCIe speed of the M.2 SSD to 1.0.
Temporary solutions include limit SSDs to PCIe 4.0 speed or use PCIe 4.0 drivesbut this defeats the advantage of the AMD platform of supporting PCIe 5.0 for both graphics and SSDs.
Some users of MSI motherboards they fixed it by applying a BIOS updatebut the solution is not universal. Asus claims that the problem is related to the SSDs and not the motherboards.
According to some sources, in some cases the first PCIe 5.0 slot for graphics cards would share lines with the first M.2 slot for PCIe 5.0 x4 SSD. If confirmed, this would indicate an incorrect implementation of PCIe on these platforms.
AMD et al Motherboard manufacturers have not yet officially commented on the situation. Further investigations are needed to fully understand the cause and find a definitive solution to this problem that undermines the potential of the AMD Ryzen 7000 platform.
Source: www.tomshw.it
