Update Your Motherboard to the Latest BIOS to Fix Intel Skylake & Kaby Lake HyperThreading Problem

[Stork]

From what I read at one of the tech sites was that all MB manufacturers April updates included the hyper thread fix. Just asking and I don't know.
http://wccftech.com/intel-hyperthre...sors-was-addressed-by-bios-fix-in-april-2017/

Be advised, if you are using an i7 or other HyperThreading Skylake or Kaby Lake processor, you will need to update to your motherboard to the latest BIOS version. (It's a good idea to always update your BIOS to correct undocumented bugs.) According to the above article, all Intel motherboard manufacturers were required up provided updated BIOS with processor microcode fixes.

Updating to the latest BIOS may "break" NVRAM memory over reboots on some motherboards. Thanks to macbookair, here's a test to see if your motherboard keeps NVRAM over a reboot:

...[a] command to test nvram, in Terminal type:

sudo nvram MyVar=TestValue
Then type this to show the current NVRAM:
nvram -p

You will see:
MyVar TestValue

After rebooting, type nvram –p in Terminal, and, if you can still see the previous result, then your NVRAM is working...

If this test fails to show "MyVar" is "TestValue", then NVRAM is not saved across reboots. To correct this problem see slim.jim's guide's Problem/Solution #6, or use MultiBeast v9.1 with just selecting the following selection, install and reboot:

Bootloaders > Clover v2.4k r4063 UEFI Boot Mode + Emulated NVRAM​

If you have a question on the above procedure, please open a new thread in either slim.jim's thread or the BIOS/UEFI forum section.

 

[Stork]

Found an article at Tom's Hardware where Intel responded to that article with the following:

We have already identified this issue and addressed it with a fix that started rolling out in April 2017. As always, we recommend checking to make sure your BIOS is up to date, but the chance of encountering this issue is low, as it requires a complex number of concurrent micro-architectural conditions to reproduce.

Reference:
http://www.tomshardware.com/news/hyperthreading-kaby-lake-skylake-skylake-x,34876.html

 

[mrc457890]

Hello - has anyone nowadays again Hyperthreading problems with the Skylake processor’s? I have a H110 board with an i3/ 6100 CPU (Microcode from Juni 2020). And I still can’t us Hyperthreading in monterey.. Has anybody a solution for that? Thanks a lot!