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Thread: Windows 10 KB4100347 update breaks Broadwell-E overclocking

  1. #1
    Join Date
    Apr 2005
    1,844 times in 627 posts

    Windows 10 KB4100347 update breaks Broadwell-E overclocking

    It is possible to uninstall this Spectre Variant 2 patch if you wish.
    Read more.

  2. #2
    Join Date
    Mar 2015
    3 times in 3 posts
    • Potbellieddwarf's system
      • Motherboard:
      • MSI X99A XPower Gaming Titanium
      • CPU:
      • i7-6900K @ 4.5GHz (Full custom watercooling)
      • Memory:
      • 32GB 3000MHz DDR4 Corsair Dominator Platinum C15 (4 x 8GB)
      • Storage:
      • 256GB Samsung NVME M2 (OS), 6 other 2.5" SSD's for game files, 2TB Seagate HDD (Storage)
      • Graphics card(s):
      • MSI GTX TITAN X (Maxwell) & EVGA Titan X SC(Maxwell) in SLI(Both are fully custom watercooled)
      • PSU:
      • SeaSonic P-1050XP3 1050W Platinum
      • Case:
      • Thermaltake Tower 900 (White) Full custom watercooled loop with twin pump
      • Operating System:
      • Windows 10 Pro
      • Monitor(s):
      • Asus 34" ROG Swift PG348Q & Sony 55" curved 4K HDR
      • Internet:
      • SKY Fibre Pro 80 Mb Broadband (80 download & 20 upload)

    Re: Windows 10 KB4100347 update breaks Broadwell-E overclocking

    I am having no problems with overclocking my Broadwell-E i7-6900K on my MSI X99A XPOWER GAMING TITANIUM motherboard.
    I have checked and update KB4100347 is installed.
    I have even tried changing my overclock settings and everything is working fine.
    Not sure if I am lucky or if it doesn't affect MSI motherboards.
    <a href=""><img src="" border="0" /></a>

  3. Received thanks from:

    mtyson (24-09-2018)

  4. #3
    Registered User
    Join Date
    Sep 2018
    0 times in 0 posts

    Re: Windows 10 KB4100347 update breaks Broadwell-E overclocking

    I have the same problem on my MSI X99S SLI Krait Edition and an Intel Core i7 6900K running just 3.7GHz instead of my overclock of 4.2GHz.
    I uninstalled the KB4100347 update and then I downloaded the win update tool here (the prevent-driver update tool doesn't work for it, it has to be this one)->
    It allowed me to find the KB4100347 on the win update list and block it from being downloaded and installed. It works without issues. The update doesn't appear anymore when I run windows update and the pc runs at 4.2GHz again.

    My wifes PC running with MSI X99S Gaming 7 and a Core i7 5960X@4.1GHz isn't affected by this update.

  5. #4
    Join Date
    Sep 2016
    1 time in 1 post

    Re: Windows 10 KB4100347 update breaks Broadwell-E overclocking

    I also was affected by this bug, Asus Rampage V Edition 10 and 6950X OC to 4.4 Ghz, when update is installed working at 3.5 ghz instead of 4.4 ghz. I unistalled this update and blocked it using 2 weeks ago.

  6. #5
    Admin (Ret'd)
    Join Date
    Jul 2003
    3,208 times in 2,281 posts

    Re: Windows 10 KB4100347 update breaks Broadwell-E overclocking

    A classic example of why auto-installing updates, when MS want to, is a non-starter for me. But at least this one simply hit performance .... sometimes. What's utterly unacceptable is MS deciding I need an update, with the result being something I need, right now, not working until I've spent hours trying to work out how to un-bork my machines .... while, either a deadline looms or an editor/client is screaming at me.

    No thanks, MS. Before I do any updates, I clone the drive(s) and do a dry-run on the copy. Only if everything works fine do I update a live system. And I need to do updates whrn it suits me, in a known quiet time, not when you or your systems decide my PC is "ready".

    Though it's not the only reason, that alone kills W10 for me.

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