Windows 10: KB4100347 update patch clock lowest frequency

KB4100347
Intel microcode fix for "Specter v2"


After the update the CPU (Intel i5-3317U ASUS X202E ) is fixed at the lowest frequency and the speed becomes 1/3 or less.

-=- Help me !! intel core cpu. -=-



after---


After uninstalling KB4100347, the problem has disappeared, but the KB4100347 patch is a patch for a vulnerability in "Intel CPU" called "Specter".
I hope for prompt response. And is there a personal response possible? (Other than disconnecting from the net.

:)

 

KB4100347 Intel microcode updates for Windows 10 v1803 - September 13


Hi, I have five questions.

• I received a BIOS update. I was told that KB4100347 would only apply its ucode if that is newer than on the BIOS level. As best practice should I uninstall that KB411347 then hide it or is that a waste, especially since new updates will be coming? I figure it would just reinstall KB4100347 even with an equivalent BIOS patch. Anyway I almost want to roll back the update just to see the BIOS update change it. (Edit: okay that is what I did. Haven't done BIOS yet. CPU-Z validation still shows it patched but HWINFO shows it back at the old ucode. Surprisingly even if I check for updates WU doesn't want to reinstall KB4100347. Maybe it just takes time). Will it not download KB4100347 once I update the BIOS if it is not newer? If the patch versions are equivalent will the BIOS version take precedent? I take it this is something I will need to keep checking with my OEM as this will be updated. Do I still need InSpectre?

• Does a BIOS update cause any decrease in performance like the OS level updates do? Mine says "released for Spectre." I was told Spectre has a higher impact than Meltdown; don't know if that comparison is just with OS level fixes.

• Just to be clear. Meltdown is patched at the OS level using ucode from Intel and Spectre can be mitigated at BIOS or OS level using Intel's ucode or does Spectre need both levels? InSpectre says "This system's Intel processor provides high-performance protection from the Meltdown vulnerability" which makes me think it does not need a patch. But that is confusing because I also thought Meltdown didn't have to do with the processor.

• Does uninstalling an update also uninstall any updates that came after that one?

• How can I tell which Spectre version patch I have? CPU-Z validation doesn't seem to be accurate because it said I was still patched at CVE-2017-5715 even after I uninstalled the ucode. I have now installed the BIOS update and it is back at the ucode the OS had updated the CPU to but I don't know if that will continuously change or if there are Spectre patch versions.

I ran a bench in CPU-Z to compare the before and after. Don't know if that will tell me anything.

Oh to anyone who needs it this looks helpful.

 

problems with Spectre update KB4100347

So Windows Update downloaded the Spectre patch, KB4100347, earlier this week -- and it seriously screwed up my processor speeds. I've got an i7-6950, overclocked to 4250 on the front five cores and 4375 on the back five -- the first screenshot attached
shows the proper reading in HWMonitor.





After the patch, even though the overclocking settings in my BIOS haven't changed, everything's screwed up -- all the cores are clocked to 4375, except random ones (it changes depending on reboot) that are massively downgraded. In addition, the update breaks
Intel Turbo Boost Max, which does not boot, shows up as not installed in the device manager, and which will not reinstall or start (there's an error message saying there's a problem and a BIOS setting might need to be changed.





So I know an update like this is needed because of Spectre; but I also know that my processor number is not actually among those listed in

the knowledge base article. So is Windows downloading this update incorrectly? Is there another one that will actually work correctly with my processor? Is there something I have to do in the BIOS before I install this update? That's a problem because
Asus still hasn't released anything but a beta BIOS for my board. I currently have my computer rolled back and KB4100347 blocked, but that seems like a temporary fix given the serious nature of Spectre. Any advice would be welcome.

 

Do I need KB4100347 for my processor?

My laptop has tried to do

2018-07 Update for Windows 10 Version 1803 for x64-based Systems (KB4100347)

and failed twice this month.( All the other windows/adobe updates have installed properly)

I have run the troubleshooter and it says everything is fine but when I check the update history there is no KB4100347 listed.

According to various sources on the internet this is supposed to be another security patch for intel processors to stop a vulnerability being exploited.

so I have 2 questions:

1. Will it keep trying to do this update? If so is it requiring another update first (I have not missed any cumulative updates since 1803 was installed)?

2. Is it a problem if my computer can't get this update? (it has an older N3060) perhaps only some cpu types need it?

Any helpful opinions/official guidance welcome