Effective bandwidth of mismatched PCIe card and slot












1















What happened if :




  1. x16 PCIe 2.0 card into x16 PCIe 3.0 slot (but electrically x8 link due to sharing)


  2. x16 PCIe 3.0 card into x16 PCIe 2.0 slot (but electrically x8 link due to sharing)


  3. x8 PCIe 3.0 card into x16 PCIe 2.0 slot











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  • Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

    – fixer1234
    Jan 21 at 3:42











  • @fixer1234 separate case

    – edan_tenan
    Jan 21 at 3:44
















1















What happened if :




  1. x16 PCIe 2.0 card into x16 PCIe 3.0 slot (but electrically x8 link due to sharing)


  2. x16 PCIe 3.0 card into x16 PCIe 2.0 slot (but electrically x8 link due to sharing)


  3. x8 PCIe 3.0 card into x16 PCIe 2.0 slot











share|improve this question

























  • Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

    – fixer1234
    Jan 21 at 3:42











  • @fixer1234 separate case

    – edan_tenan
    Jan 21 at 3:44














1












1








1








What happened if :




  1. x16 PCIe 2.0 card into x16 PCIe 3.0 slot (but electrically x8 link due to sharing)


  2. x16 PCIe 3.0 card into x16 PCIe 2.0 slot (but electrically x8 link due to sharing)


  3. x8 PCIe 3.0 card into x16 PCIe 2.0 slot











share|improve this question
















What happened if :




  1. x16 PCIe 2.0 card into x16 PCIe 3.0 slot (but electrically x8 link due to sharing)


  2. x16 PCIe 3.0 card into x16 PCIe 2.0 slot (but electrically x8 link due to sharing)


  3. x8 PCIe 3.0 card into x16 PCIe 2.0 slot








bandwidth pci-express






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edited Jan 21 at 3:40







edan_tenan

















asked Jan 21 at 3:34









edan_tenanedan_tenan

63




63













  • Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

    – fixer1234
    Jan 21 at 3:42











  • @fixer1234 separate case

    – edan_tenan
    Jan 21 at 3:44



















  • Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

    – fixer1234
    Jan 21 at 3:42











  • @fixer1234 separate case

    – edan_tenan
    Jan 21 at 3:44

















Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

– fixer1234
Jan 21 at 3:42





Are you asking about each as a separate case, or what the net result would be if you did all three at the same time?

– fixer1234
Jan 21 at 3:42













@fixer1234 separate case

– edan_tenan
Jan 21 at 3:44





@fixer1234 separate case

– edan_tenan
Jan 21 at 3:44










1 Answer
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After read the Specs, I conclude the least denominator rule apply here. Therefor for all three cases : 8 lanes PCIe 2.0 mode used = 4GB/s






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    1 Answer
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    After read the Specs, I conclude the least denominator rule apply here. Therefor for all three cases : 8 lanes PCIe 2.0 mode used = 4GB/s






    share|improve this answer




























      0














      After read the Specs, I conclude the least denominator rule apply here. Therefor for all three cases : 8 lanes PCIe 2.0 mode used = 4GB/s






      share|improve this answer


























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        0







        After read the Specs, I conclude the least denominator rule apply here. Therefor for all three cases : 8 lanes PCIe 2.0 mode used = 4GB/s






        share|improve this answer













        After read the Specs, I conclude the least denominator rule apply here. Therefor for all three cases : 8 lanes PCIe 2.0 mode used = 4GB/s







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        share|improve this answer










        answered Jan 22 at 14:00









        edan_tenanedan_tenan

        63




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