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Beginner
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X520-SR2 net speed slow down at dell T5820(Xeon W-2123)

I install X520-SR2 card at two dell T5820 workstations whose cpu type is Xeon W-2123. Operation System is WIN7 x64. When I use iperf to test speed with each other, the value is only about 350MB/s.

But when I intall X520-SR2 card at two PC whose cpu type is i5 using WIN7 x64 , the speed can achieve to 800MB/s.

What is the problem? help!

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Moderator
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Hi hyach, Thank you for posting in Intel® Ethernet Community. Kindly provide the System Support Utility logs of the 2 cpu type. This will help us look into the configuration of your dell T5820 workstation and i5 system. -Download and run the .exe from this link - https://downloadcenter.intel.com/download/25293/Intel-System-Support-Utility-for-Windows- - Check "everything" then click "scan" When scan is finished click "next" Save the log and attach it to a post Looking forward to your response. Best Regards, Vince T. Intel Customer Support
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Moderator
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Hi hyach, We'd like to follow-up the requested information. Thanks. Best Regards, Vince T. Intel Customer Support
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