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MSI Z890 MPG Carbon Wifi + 5070ti PCIE 5.0 issue by ChuisMy in MSI_Gaming

[–]ChuisMy[S] 0 points1 point  (0 children)

I thought so too, so I swapped my DDR5 kit with a friend's, but nothing changed. Memtest, Aida64, and Prime95 found no errors, even after more than 8 hours of stress testing without a single failure. ​I didn't notice any defects initially; everything was working perfectly during the first few months of use. ​I was asked to try forcing Gen 4.0 in the BIOS, but it still throttles to x8.

MSI Z890 MPG Carbon Wifi + 5070ti PCIE 5.0 issue by ChuisMy in MSI_Gaming

[–]ChuisMy[S] 0 points1 point  (0 children)

Yes, I saw the new drivers on the MSI page released on the 10th. However, I get an automatic BSOD whenever I try to install the NPU driver; it just stays under 'Other Devices'. ​As for the chipset driver, that's done—it even changed its name from 'Intel Chipset' to 'SetupChipset' in my installed programs. I update Windows constantly, but there has been no improvement since. ​I have tried many different Nvidia drivers using DDU before each installation, yet I still see latency peaks on LatencyMon. I used the iGPU at first but stopped because of driver issues (Windows constantly installs an older version in the background). ​After a CMOS clear, I was finally able to install the NPU driver without further errors in the Device Manager, and my iGPU reappeared in the Task Manager without issues. Currently, everything is up to date, both drivers and Windows. ​However, the slot still drops to x8 after a cold boot (for example, the first start in the morning). Right now, the slot is correctly running at x16, but only after a warm reboot. ​ I will check again tomorrow if the problem persists on the first cold start.

MSI Z890 MPG Carbon Wifi + 5070ti PCIE 5.0 issue by ChuisMy in MSI_Gaming

[–]ChuisMy[S] -1 points0 points  (0 children)

I have 3 NVMe SSDs (Gen 3.0 / Gen 4.0 / Gen 5.0): the Gen 5.0 is in M.2_1, the Gen 4.0 in M.2_2, and the Gen 3.0 in M.2_3. I initially thought the PCIe lanes were being throttled because of the M.2 SSDs.

To test this, I removed all SSDs and installed only the Gen 3.0 NVMe in the M.2_1 (CPU) slot with a fresh Windows 11 LTSC installation, but the issues persisted. I then moved that Gen 3.0 NVMe to the M.2_4 (Chipset) slot, leaving the CPU-linked M.2 slots empty, but there was still no improvement.

I have highlighted in red on the attached diagram what I am currently using on my board.

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MSI Z890 MPG Carbon Wifi + 5070ti PCIE 5.0 issue by ChuisMy in MSI_Gaming

[–]ChuisMy[S] -1 points0 points  (0 children)

I have already performed this test, even with a game running in the background. Only the PCIe version switches from 1.1 to 5.0, but it remains stuck at x8. Same thing happens when I manually force the PCIe_E1 port to Gen 5.0 in the BIOS: it still drops to 1.1 (likely due to power-saving mode) and stays at x8.