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Guru3D.com » News » New Microsoft/Intel microcode update KB4100347 breaks Haswell-E and Broadwell-E overclocks

New Microsoft/Intel microcode update KB4100347 breaks Haswell-E and Broadwell-E overclocks

by Hilbert Hagedoorn on: 09/23/2018 08:40 AM | source: forums | 133 comment(s)
New Microsoft/Intel microcode update KB4100347 breaks Haswell-E and Broadwell-E overclocks

Multiple users on the X99 platform have confirmed and are reporting that their tweaks and overclocks are no longer working after they got Microsoft update KB4100347 installed. This is an Intel Meltdown related vulnerability microcode update. 

Basically what some (but not everybody) end-users are reporting is that once the update (Intel CPU Microcode update) has installed, their tweaks and overclocks are bust and cannot be re-enabled as the PS sticks to reference clocks. This has been reported with X99 setups from multiple manufacturers.

Some examples of users experiencing issues:

  • before the update the proc was running 4.2Ghz on all cores but after this update, the Cpu runs Default 3.7 all cores with 1xCore @ 4Ghz.
  • I have a 6850k that had an OC of 4.4 now I'm being clocked down to 3.8 it is really pissing me off, at least now I know it's not just me though.

From the looks of things, this could be an incompatibility issue with the BIOS microcode and the UEFI/OS microcode. And that would mean a BIOS update is a mandatory requirement (if available).

You can uninstall the update and it will fix the problem, It is only an Intel update anyway and my 6850k isn't on the list. To uninstall go to Windows Settings-> Update & Security -> View update history -> Uninstall updates, then right click on the update with (KB4100347) and click uninstall.

Users report with the KB update removed, their overclocks come back to life.

 







« Z390 motherboards from ASRock, ASUS and MSI caught on camera · New Microsoft/Intel microcode update KB4100347 breaks Haswell-E and Broadwell-E overclocks · Prices Intel Coffee Lake Procs Are Skyrocketing due to 14nm shortages »

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sykozis



Posts: 22211
Joined: 2008-07-14

#5586179 Posted on: 09/19/2018 03:25 AM
This update isn't just affecting Intel systems. MS is also pushing it out to AMD based systems. Apparently, they screwed up. I have this microcode update installed and I'm running a Ryzen 5 1600....

screwtech02
Senior Member



Posts: 204
Joined: 2011-12-13

#5586180 Posted on: 09/19/2018 03:27 AM
Uninstalled, blocked it, all good..

HeavyHemi
Senior Member



Posts: 6954
Joined: 2008-10-27

#5586184 Posted on: 09/19/2018 03:40 AM
Indeed, was pretty pissed for that. But hey, silicon lottery is silicon lottery.
It's just about time to change it anyway, so doesn't matter much today.

Not planning to turn this thread into an AMD vs Intel thing, but to be honest Intel kinda deserves to be ditched... for now. Just too many problems and f*ckups lately... (And yes, it must be THEIR fault, not Microsofts, as Intel is providing those microcode updates to Microsoft)

The golden age of Intel CPU's that overclocked like mad and roflstomped anything in their path are over.

This latest news you provided is just one extra reason to consider the competition ( not that there aren't already enough of them )

Yes...not planning on...then proceeds with plan....sheesh. ;)

HeavyHemi
Senior Member



Posts: 6954
Joined: 2008-10-27

#5586185 Posted on: 09/19/2018 03:41 AM
This update isn't just affecting Intel systems. MS is also pushing it out to AMD based systems. Apparently, they screwed up. I have this microcode update installed and I'm running a Ryzen 5 1600....


Yes, you probably have the .dll file but, it won't affect your system.

sykozis
Senior Member



Posts: 22211
Joined: 2008-07-14

#5586195 Posted on: 09/19/2018 06:26 AM
Doesn't matter if it is supposed to affect it or not. It should have never been downloaded in the first place.

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