After a Windows 10 Update Today Overclocking is lost. WTF Microsoft and Intel???

xkm1948 · Sep 14, 2018

KB4100347 is the one I am talking about. After installing this update my CPU is no longer overclocking to the BIOS set 4.3GHz. This results in massive loss of performance.

See for yourself. I tried resetting BIOS and everything and nope. CPU is stuck in default speed. If you are using Intel BWE CPU do not install the KB4100347 patch as it will cripple your system overclocking.

spectatorx · Sep 14, 2018

How windows can disable something what is set in bios/uefi? Windows should have no access to bios settings.

xkm1948 · Sep 14, 2018

spectatorx said:
How windows can disable something what is set in bios/uefi? Windows should have no access to bios settings.

CPU Microcode update "validated by Intel" and pushed by Microsoft. Modern processors can be programmed through OS. In this case Intel must have hired bunch of high school dropouts to do their validation.

For people who use BWE CPUs, make sure to block this freaking update. I am gonna try to remove this update and see if that helps. Jesus.

eidairaman1 · Sep 14, 2018

spectatorx said:
How windows can disable something what is set in bios/uefi? Windows should have no access to bios settings.

Must of passed a firmware agesa update in, switch to 7

rtwjunkie · Sep 14, 2018

Maybe I’ve been living in a cave, but: HWE and BWE?

hat · Sep 14, 2018

Guessing he means Haswell Extreme and Broadwell extreme.

xkm1948 · Sep 14, 2018

KB4100347

Summary

Recent Changes:

Intel Microcode Updates around the following products (CPUs) have been revised. We recommend to take this latest update to stay current:
- Broadwell Server E, EP, EP4S
- Broadwell Server EX
- Skylake Server SP (H0, M0, U0)
- Skylake D (Bakerville)
- Skylake X (Basin Falls)

https://support.microsoft.com/en-us...or-windows-10-version-1803-and-windows-server

Well it seems to impact a lot of Intel CPUs. Be careful then.

Candor · Sep 14, 2018

I just installed this update with an i7-5820K on Asus ROG Strix X99 Gaming.

The update had no effect my overclock of 4.5ghz.

xkm1948 · Sep 14, 2018

Need another Broadwell-E owner to check this.

lexluthermiester · Sep 14, 2018

If you are having a problem with that update, uninstall and block it.

xkm1948 · Sep 14, 2018

Well f*uck me. Forced uninstalled that update in safe mode and now system is stuck in BSOD loop and can’t even get into recovery mode!

Thanks a bunch Microsoft for mess up my work computer with your “Intel validated” microcode update.

Candor · Sep 14, 2018

Oh snap. This is why I use third party system backup software.

lexluthermiester · Sep 14, 2018

xkm1948 said:
Well f*uck me. Forced uninstalled that update in safe mode and now system is stuck in BSOD loop and can’t even get into recovery mode!
Thanks a bunch Microsoft for mess up my work computer with your “Intel validated” microcode update.

Use the install media recovery to get into system restore.

MrGenius · Sep 14, 2018

Exactly what I was going to say. ~~You'll have a restore point that was made automatically before the update was installed. If you're not dumb enough to have System Restore disabled...~~ Yeah...don't count on it. Not only is there not likely to be an automatic restore point, even if there was it probably wouldn't work. Seems as though there's some kind of major fuckery going on with this one...

EDIT: BTW...I'm headed in to see for myself. Restarting to apply update in 3...2...1....

EDIT 2: That was quick. Everything seems fine so far. 3770K booted @ 5.0GHz anyway. InSpectre now says "system is Spectre protected". Not for long it isn't. First things first...kill that BS.

EDIT 3: Hmmm...I dunno. Still doesn't seem quite right. Linpack seems a bit slower than it was...IIRC. Gonna System Restore and see if anything changes.

EDIT 4: Ummmm...yeah. This is not looking good. First, there was no automatic System Restore point. Though I had made one just before downloading and installing the update. Which failed. Then the next most recent restore point from a couple days ago failed too. Got a handful more to try. But IME...once one fails...they all fail. Rarely has that not been the case...for me anyway. We'll see I suppose...

xkm1948 · Sep 14, 2018

Yep we are not the only ones

https://translate.google.com/translate?sl=auto&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=https://www.chiphell.com/thread-1909316-1-1.html&edit-text=&act=url

So a quick TL;DR

Intel is pushing out new CPU microcode to ALL of their modern CPUs via WIndows 10
Old montherboards (Like X99, X79) will not receive any more BIOS updates from ASUS, MSI and etc.
Updated CPU microcode have conflict with BIOS microcode
You now loose ALL of your overclock capability, or worse BSOD loops

Can we potentially get some news converage @btarunr or @W1zzard ? This will be a very nasty surprise for people with older platforms which with a bit of OC should run perfectly fine.

cadaveca · Sep 14, 2018

go the update, no problems here on Skylake-X. Seem like a problem with your specific board, IMHO. Too bad.

xkm1948 · Sep 14, 2018

cadaveca said:
go the update, no problems here on Skylake-X. Seem like a problem with your specific board, IMHO. Too bad.

View attachment 106869

Skylake-E probably have latest system BIOS update. Broadwell-E will no longer receive BIOS update from motherboard makers.

Also run a few benchmarks @cadaveca see if the score stacks up

Also no, not my specific board. Check my reply a few posts up with Broadwell-E owners from ChipHell. A lot of folks are affected.

phill · Sep 14, 2018

Interesting development.....

xkm1948 · Sep 14, 2018

Here is the funny thing. I was already on latest 3902 beta BIOS when this happened. I seriously doubt ASUS will continue support their X99 boards with new microcode updated BIOS though.

agent_x007 · Sep 14, 2018

So, what will happen, when you try to install it on manually moded BIOS or UEFI (with ucode updates) ?
Think X58/LGA 1366 stuff...

MrGenius · Sep 14, 2018

I gave up trying to system restore for the moment. I'm running benches instead to see if I really need to. So far not so good. Significant performance loss across the board. And that's with Meltdown and Spectre protections disabled too. Meaning there doesn't appear to be a way to fix it once the update is installed.

Time Spy CPU -4.63%(best of 3 runs)
Time Spy Extreme CPU -3.22%(best of 3 runs)
PCMark 7 -12.01%(1 run)
PCMark 10 Essentials -26.02% / Productivity -33.81% / Digital Content Creation -crashed with previously stable clocks and voltages(1 run)
Linpack -6.35%(best of 5 runs)

More to come...

BIG EDIT: Somewhere around 75% of the performance loss percentages stated above(as in ~3/4 of whatever -%) were actually from having Core isolation with Memory integrity enabled. Who knew? :oops:

The Spectre microcode performance loss was no less real. Just much less significant(and possibly non-existent or negligible in some instances, though definitely not all).

Good news: I can still overclock my 3770K.

Bad news: It runs quite a bit hotter, slower, and/or with less stability.

xkm1948 · Sep 14, 2018

agent_x007 said:
So, what will happen, when you try to install it on manually moded BIOS or UEFI (with ucode updates) ?
Think X58/LGA 1366 stuff...

With microcode updated? In theory it should be completely fine. Thing is not a lot of people are comfortable editing their own BIOS.

I wish there is a way to roll back the CPU microcode update. But I may have to reinstall Windows 10 first.

cadaveca · Sep 14, 2018

xkm1948 said:
Also no, not my specific board. Check my reply a few posts up with Broadwell-E owners from ChipHell. A lot of folks are affected.

I'll check my son's system later, but he would have noticed himself, and didn't mention anything.

And yeah, not just your model ,but X99 should get Spectre updates, and these updates are likely the root cause of the problem (whether not in place, or in place, not sure). Given certain companies tossed out BIOS updates without proper vetting as a practice, I'm not exactly surprised.

Still doesn't change the fact that this is a BIOS problem. That's most definitely going to be board-specific. AS in some boards won't have this problem, some will.

Performance on my system is fine. I always check after OS updates, and I just updated all my systems with Sept OS updates. Nothing exciting there.

BIOS losing OC-ability isn't restricted to Intel systems, either. I've been it on TR-based systems in the past few months as well.

AsRock · Sep 14, 2018

Makes me think of Apple, it's all to make your system to run cooler and save electric lmao.

Never liked the idea of UEFI and how Microsoft\Intel could just change shit. just to much control over some thing you payed good money for.

jsfitz54 · Sep 14, 2018

agent_x007 said:
So, what will happen, when you try to install it on manually moded BIOS or UEFI (with ucode updates) ?
Think X58/LGA 1366 stuff...

X58: No issues so far on my i7 970.

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After a Windows 10 Update Today Overclocking is lost. WTF Microsoft and Intel???

xkm1948

spectatorx

xkm1948

eidairaman1

The Exiled Airman

rtwjunkie

PC Gaming Enthusiast

hat

Enthusiast

xkm1948

Candor

xkm1948

lexluthermiester

xkm1948

Candor

lexluthermiester

MrGenius

xkm1948

cadaveca

My name is Dave

xkm1948

phill

Moderator

xkm1948

agent_x007

MrGenius

xkm1948

cadaveca

My name is Dave

AsRock

TPU addict

jsfitz54

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