Long story short, due to pcie issues, these run at pcie 2.0 speeds with latest bios. You have to downgrade bios to get pcoe 3.0 speeds. But if you got it working in unpaid, just use crystaldisk benchmark inside the guest OS
From the output:
•
LnkCap:
• Speed 8GT/s, Width x4: The device is capable of operating at PCIe 3.0 speeds (8 GT/s per lane) and supports 4 lanes (x4).
• ASPM L1: Indicates that Active State Power Management (ASPM) Level 1 is supported.
• Exit Latency L1 <8us: The time it takes to exit from ASPM L1 state is under 8 microseconds.
•
LnkSta:
• Speed 8GT/s, Width x4: The NVMe drive is currently operating at its maximum PCIe 3.0 speed of 8 GT/s on 4 lanes (x4), meaning it is running at full potential.
•
LnkCap2 & LnkSta2:
• Supported Link Speeds: 2.5-8GT/s: Confirms support for PCIe 1.0 (2.5 GT/s), PCIe 2.0 (5 GT/s), and PCIe 3.0 (8 GT/s).
• Current De-emphasis Level: -6dB: This relates to PCIe signal integrity, showing the level of signal de-emphasis being applied for data transfer.
Summary
Your NVMe drive is running at
PCIe 3.0 x4, which is optimal for the WD Black SN750 and similar drives, as this configuration provides a maximum theoretical bandwidth of
~4 GB/s. Everything seems to be performing as expected!