0 Replies Latest reply on Apr 1, 2011 8:51 AM by g8slord

    Extremely Slow Data Transfer in Win7 x64 with 82567LF adapter

    g8slord

      I have multiple Lenovo T500 laptops that are getting horrible data transfer rates while on Win7 x64. These work fine when running WinXP.  I have tried the latest drivers on both the Intel and Lenovo support sites.  Also tried a couple previous versions with no luck.  Has anyone seen this issue or have a work around to resolve?

        • 1. Re: Extremely Slow Data Transfer in Win7 x64 with 82567LF adapter
          Currently being moderated.

          Hi,

           

          maybe it's not a problem with your hardware but with Win7 x64 and the TCP Chimney offload: With chimney disabled the transfer rates workes very well again like in XP where chminey not existed:

           

          To disable chimney type the following command as admin in the command line (but that's without any warrenty):

           

          netsh int tcp set global chimney=disabled

           

          See also KB951037 at support.microsoft.com