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Intel Xeon AWS-1100v4 limited pcie lanes?




Is there any info about this cpu? I have issues with the pcie lanes. 

I have two of these cpus.
Both have the same pcie issues.
Tested systems:
HP Z440, and an Asrock X99 (stock newest updated bios!)
Both boots but only with a very old video card (like GT240, 7300GT) but no screen or boot with much modern cards (GTX580, HD6570). The HP system only works when i use the upper 1x pcie 2.0 slot that wired from the PCH not from the CPU. NVME SSD not working or not even an option in the Asrock X99 board.
So that means the two cpu somehow have buggy pcie lanes. I don't think that is completely missing the lanes because there was no crippled cpu in this platform this way.
I think it is something to do with the mmio, vmx, txt or any other feature.
There is no issues when i use regular v3 or v4 cpus in these systems.
Do anyone information about this issue?
I really don't want to send them back if i can solve it with some bios settings.
It is a QS cpu not an ES.


I really want to know if these have some kind of limited pcie lanes or any other limitations. 


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1 Reply

Dear masterdeejay,

Thank you for reaching out to us and providing information about the issues you are encountering with the PCIe lanes on the HP Z440 and Asrock X99 systems and your Intel® Xeon® Processor AWS-1100 v4. Based on the details you shared, it appears that the problem is related to compatibility or configuration rather than limitations of the processor itself.

To resolve this matter, we recommend contacting the technical support of the motherboard manufacturers for further assistance. They have the expertise to guide you through the troubleshooting process. Here are some suggestions you can discuss with them:

1. Update BIOS/UEFI firmware: Ensure that you have the latest BIOS/UEFI firmware installed on both systems. This step is crucial as newer firmware versions often address compatibility issues and enhance PCIe support. You can check the manufacturer's website for firmware updates specific to your motherboard model.

2. Check motherboard documentation: Take some time to review the documentation provided with your motherboard. This will help you ensure that the PCIe slots are configured correctly and that there are no limitations or specific requirements for the GPUs or NVMe SSDs you are using. The documentation will provide valuable insights into the optimal setup for your components.

3. Verify PCIe compatibility: It's important to confirm whether the graphics card and NVMe SSDs you intend to use are compatible with the PCIe slots available on your motherboard. Check the specifications and requirements of these components to ensure they align with the PCIe version and lane configuration of your motherboard.

4. Try different PCIe slots: If your motherboard has multiple PCIe slots, try installing the graphics card and NVMe SSDs in different slots. This will help you determine if the issue is isolated to a particular slot or if it is related to the PCIe lanes associated with it.

Lastly, please note that QS (Qualification Sample) processors, while similar to production processors, may have unique characteristics or limitations. It's important to understand that these processors are not supported by Intel. If you suspect that the processor itself is causing the issue, we recommend contacting the vendor from whom you obtained the processor. They should be able to provide you with clarification or assist in resolving the problem.

We hope these suggestions prove helpful in resolving the PCIe lane issues you're experiencing.

Best regards,

Allan A.

Intel Customer Support

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