My motherboard is overclocking by default at low loads

[cjthatdj]

Hello I just built a pc and my fans have been running on full blast constantly so I went to monitor fan speeds and I noticed also that my cpu is constantly running at a very high speed at low loads. For reference I have an intel i9-10900k and an asus rog strix z490-e gaming motherboard. I proceeded to look at the settings in bios and noticed that the "target cpu @ avx frequency" is set to 5.3ghz for some reason. I was wondering why this is the case and how I could have it stop overclocking.

 

 

 

 

 

 

 

[Senzelian]

The 10900K has a turbo boost frequency of 5.3 Ghz. This is well within spec and in non-avx workloads it should reach that clockspeed.

https://ark.intel.com/content/www/us/en/ark/products/199332/intel-core-i9-10900k-processor-20m-cache-up-to-5-30-ghz.html

[unclewebb]

5.3 GHz is the Intel default speed for a 10900K when 1 or 2 cores are active.

 

You can choose to run your CPU at whatever speed you like. If you want it to run slower when running AVX instructions, just set the AVX offset option in your BIOS. A setting of -3 will reduce your CPU speed 300 MHz when running AVX instructions. If your cooling is OK, there is no reason to do this.

 

Make sure you have updated your BIOS to the latest version from the Asus website.

 

If you want your CPU to slow down when lightly loaded, use the Windows Balanced power plan and avoid running any bloated monitoring apps that constantly load your CPU. The best way to reduce power consumption when idle is to enable the low power C states in the BIOS. You can have a fast and power efficient CPU.

 

[cjthatdj]

On 1/16/2021 at 11:17 AM, unclewebb said:

5.3 GHz is the Intel default speed for a 10900K when 1 or 2 cores are active.

 

You can choose to run your CPU at whatever speed you like. If you want it to run slower when running AVX instructions, just set the AVX offset option in your BIOS. A setting of -3 will reduce your CPU speed 300 MHz when running AVX instructions. If your cooling is OK, there is no reason to do this.

 

Make sure you have updated your BIOS to the latest version from the Asus website.

 

If you want your CPU to slow down when lightly loaded, use the Windows Balanced power plan and avoid running any bloated monitoring apps that constantly load your CPU. The best way to reduce power consumption when idle is to enable the low power C states in the BIOS. You can have a fast and power efficient CPU.

 

Thanks for the response, this helps a lot.

[-rascal-]

1 minute ago, cjthatdj said:

Thanks for the response, this helps a lot.

 

Multi-Core Enhancement (MCE) is enabled by default in the BIOS for a lot of ASUS / MSI / Gigabyte boards.

That will also make the CPU run at boost higher / longer (duration).