使用A380显卡进行视频转码AV1格式，在转换的过程中，显卡只有40%-50%的占用率。

[liff8so]

使用ShanaEncoder软件或使用HandBrake软件给视频进行AV1格式视频转码，显卡的占有率只能跑到40%-50%，并且CPU的占有率会升到85%-95%，是不是驱动的调度机制有问题？

[RandyT_Intel]

Hi @liff8so,

请注意，我只能用英语为您提供支持。我已经使用网络翻译工具来翻译此响应，因此可能存在一些不准确的翻译

Thank you for posting in the community. To better assist you and investigate the issue, I’d like to clarify a few points and request additional information to help determine the root cause.

1. When did the issue first occur? Have you previously used values beyond the ranges you mentioned without encountering problems?
2. What troubleshooting steps have you tried so far? For example, have you reinstalled the drivers or retested the software to check for any changes?
3. Have you updated your graphics driver to the latest version? If possible, please provide an SSU (System Support Utility) log report so I can review your system configuration.
4. Aside from the AV1 format, have you attempted transcoding with other video formats? If yes, were there any differences in performance or output? Screenshots, test comparisons, or a short recording would be helpful to observe and potentially reproduce the issue.
5. Lastly, is your graphics card an Intel-branded model or an add-in card from a third-party manufacturer?

I look forward to your response and am committed to resolving your issue promptly. 

Best regards,  

Randy T.  

Intel Customer Support Technician  

[liff8so]

我反馈的问题，目前已经解决。问题的根源在于（AMD 3400G）CPU 提供的PCIE通道数（只有12条）不足造成的，最终分配给A380显卡只有PCIE3.0 4X，所以就造成了PCIE带宽不足A380显卡在转码的时候只有40%左右的占用率。目前我已经更换了（AMD 5600）CPU，PCIE通道数为24条，并且可以工作在PCIE4.0。现在A380显卡在转码的时候占用率可以达到80%-85%。但是美中不足的是CPU的占用率还是85%-95%左右，整机功率在150W左右比较费电。在此向您提个建议，在后续的驱动中能不能增加一个选项，转码的时候可以选择（CPU+GPU组合转码或单独GPU转码）两种模式，并且把单GPU转码命名为“节能模式”，而（CPU+GPU组合转码）命名为"性能模式“。这样操作者可以根据实际需要来进行选择。

[RandyT_Intel]

Hi @liff8so,

Thank you for the detailed update! I'm glad to hear that your transcoding issue has been resolved by upgrading from the AMD 3400G to the AMD 5600 CPU. You correctly identified that the problem was related to insufficient PCIe lanes - the 3400G's 12 lanes limited your A380 to PCIe 3.0 x4, while the 5600's 24 lanes now allow it to run at full PCIe 4.0 speed, significantly improving your transcoding performance from 40% to 80-85% GPU utilization.

Since your main issue is now resolved, I'll be closing this support ticket. If you encounter any new issues or need further assistance in the future, please feel free to create a new support ticket and we'll be happy to help you again.

Thank you for sharing your solution , it may help other users facing similar PCIe bandwidth limitations!

Best regards,  

Randy T.  

Intel Customer Support Technician