Realtek NIC Slow uploads! (8111c)

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  1. tomdot
    Posts : 9
    W7
       New #1

    Realtek NIC Slow uploads! (8111c)


    Dear all,

    I have spent alot of time on Windows 7 using a Realtek 10/100/1000Mb PCIe 8168/8111C built-in NIC with massive problems with UPLOAD only. I am using a 100megabit connection in Hong Kong and while I can download from the Hong Kong Internet eXchange (HKIX) at 10.MBytes constantly, I have been experiencing extreme network stutter and slow uploads (<1MByte/s) within my Internal LAN.

    I have been updating to the latest Realtek's drivers in hope of having this bug fixed, but without success.

    Long story short, through rigorous and desperate testing, I found that each driver version gave me different results, suggesting a driver related issue.

    Working backwards I found
    The answer = Version 6.206.0502.2008

    Found here: REALTEK - Download driver for RTL8168B/8111B



    I can now upload at over 7MBytes/s (limited to my 10Mbps NAS) thereby resolving ALL my network issues in Windows 7 (ethernet connectivity drops/connection loss/DNS errors).

    I see many who have identified that there is indeed a problem with uploading only to be shunned off by senior members. I too have went through possibilities such as Half Open TCP ports, TCPIP.sys patching and constant fiddling with NIC settings (Speed & Duplex).....This is your answer.

    I hope it resolves problems for everyone. Good luck!
    Last edited by tomdot; 16 Aug 2013 at 04:38. Reason: Relevant for 8168 Chipset as well!
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  3. ppp
    Posts : 32
    Windows 7
       New #2

    Glad you found your solution. I am having the SAME problem (20MBit download, 500KB upload to internal LAN) with my AMD/ATI motherboard's onboard NIC. It's making me crazy.
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  4. tomdot
    Posts : 9
    W7
    Thread Starter
       New #3

    ppp,

    please let me know if the same driver works for you. (Assuming same onboard NIC).
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  6. ppp
    Posts : 32
    Windows 7
       New #4

    tomdot said:
    ppp,

    please let me know if the same driver works for you. (Assuming same onboard NIC).
    Oh hot dog! Yeah I have the 8168 so the same driver SHOULD work. I will try it when I get home and let you know ASAP!
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  7. ppp
    Posts : 32
    Windows 7
       New #5

    Ok sadly that link is for driver version 6.218.0317.2009

    *sigh*
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  8. ppp
    Posts : 32
    Windows 7
       New #6

    Nevermind, I found them. Trying now.
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  10. ppp
    Posts : 32
    Windows 7
       New #7

    YES. I can verify that these drivers provide me the full 1.0MBPS (8 mbit) upload that I ought to get to the Internet. When I actually get home I will be able to verify full transmit to the local LAN.

    This surprises me greatly. One thing I notice is that these older drivers are NDIS 6.0, not NDIS 6.2 - which might make a difference.

    Or, perhaps there are internal settings. One wonders whether we could duplicate this with parameters or settings in the newer drivers, but I'm happy to use the older ones for now!
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  11. ppp
    Posts : 32
    Windows 7
       New #8

    Ok NO. I now get full speed to the Internet, and to the VPN (Hamachi) but NOT to the local LAN. This is odd, because Hamachi SHOULD look like a local LAN to Windows.

    I'm very confused by this. I may upgrade Windows, as this machine is still running 712x.
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  12. aradriel
    Posts : 2
    XP/Vista/7
       New #9

    Great, it worked and fixed my slow/connections freezes case! Iam also here with Realtek 8111C. Thanks a lot for testing the drivers :)
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  13. ChrisInVT
    Posts : 25
    Windows 7
       New #10

    Sorry to bump an old post, but this fixed my problem on one of my three PCs having problems. Now I have to go try this on the others.
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