KB4100347 reportedly breaks Broadwell-E overclocking

  1. Faith's Avatar
    Posts : 595
    Windows 10 Home October 2018 Update 64-bit
       24 Sep 2018 #1

    KB4100347 reportedly breaks Broadwell-E overclocking


    It’s no longer a surprise that some of the software updates are causing more harm than good on certain computers. It looks like Microsoft’s KB4100347 for Windows 10 that fixes a recent Spectre vulnerability is doing more harm than good on systems powered by Broadwell-E processor.

    Microsoft released KB4100347 a while ago and the company updates the patch with support for more processors once in a while. This update is basically supposed to provide more mitigations against the Spectre Variant 2 vulnerability but according to reports from Reddit users, this patch has killed the overclocking on Broadwell-E processors.

    Source: Windows 10 KB4100347 (Intel update) reportedly breaks Broadwell-E overclocking

    See also: KB4100347 Intel microcode updates for Windows 10 v1803 - September 13 - Windows 10 Forums
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  2. Faith's Avatar
    Posts : 595
    Windows 10 Home October 2018 Update 64-bit
       24 Sep 2018 #1

    Should be noted this has also been reported to affect X99's Haswell-E aswell.
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  3.    24 Sep 2018 #2

    Faith said: View Post
    Should be noted this has also been reported to affect X99's Haswell-E aswell.
    Not my Haswell e 5820K ......

    but, it's reported that KB4346084 resolves the issue. Several users report that uninstalling KB4100347 and installing KB4346084 restores the overclocked settings, though it's not clear if the former update actually needs uninstalled—the latter one is supposed to override it.



    Intel Broadwell-E CPU Overclocking Reportedly Wrecked By Windows 10 Update | HotHardware
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  4. Faith's Avatar
    Posts : 595
    Windows 10 Home October 2018 Update 64-bit
    Thread Starter
       24 Sep 2018 #3

    Kbird said: View Post
    Not my Haswell e 5820K ......

    but, it's reported that KB4346084 resolves the issue. Several users report that uninstalling KB4100347 and installing KB4346084 restores the overclocked settings, though it's not clear if the former update actually needs uninstalled—the latter one is supposed to override it.



    Intel Broadwell-E CPU Overclocking Reportedly Wrecked By Windows 10 Update | HotHardware
    It seems to affect certain BIOS' and MBs, not the whole X99 spectrum. I have a 5820K too, but I don't overclock. Also, Isn't the KB4346084 Intel update for Skylake and up and not ment for Broadwell/Haswell? All these KB articles and microcodes are really confusing…
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  5.    24 Sep 2018 #4

    I'm as confused as you :)

    The link above came up on my phone "feed" this morning so I figured I'd link others to it in case they had issues


    it does indeed look like it's for all the 'lake Processors looking at this :

    https://support.microsoft.com/en-ca/...rocode-updates
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  6.    24 Sep 2018 #5

    I posted this yesterday here on tenforums.com with a link to more info and a question
    KB4100347 breaks OC on specific CPU's - What to expect?

    Anybody here have an idea what to come to fix this?
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  7. ThrashZone's Avatar
    Posts : 4,204
    3-Win-7Prox64 2-Win10Prox64
       24 Sep 2018 #6

    Hi,
    Good find @Kbird
    I was just about to post that link from ocn
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Related Threads
Source: https://support.microsoft.com/en-us/help/4100347/intel-microcode-updates-for-windows-10-version-1803-and-windows-server See also: KB4346084 Intel microcode updates for Windows 10 v1803 - August 21 - Windows 10 Forums See also: KB...
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