https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 14 Jun 2026 09:31:54 +0000 Thu, 29 Jul 2021 17:33:40 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=10815 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=10815&PID=89475&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#89475 Author: Hamzee110
Subject: 10815
Posted: 29 Jul 2021 at 5:33pm

I have the same setup as you: i5-8400 & Z370P D3 running F2 BIOS currently with everything set to Auto.

Cryorig H7 keeps it cool but it sits at 3.8Ghz in the BIOS.

Inside Windows, if I have it set to High Performance and then manually edit the minimum processor state to 5%, it'll still sit at 3.8.

The only fix I've found is to use the Balanced power plan and it happily downclocks to 1Ghz and ramps up when needed.

As long as I don't see any performance issues in games I'll leave it like this.]]> Thu, 29 Jul 2021 17:33:40 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=89475&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#89475 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60650&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60650 Author: ASRock_TSD
Subject: 10815
Posted: 12 Feb 2019 at 2:26pm

Dear Bootcanon,

Thank you for your reply.

The CPU frequency will down to 800MHz when system idle.
Please test with BIOS default setting and run the Hyper PI single thread test, the i5-8400 can turbo to 4.0GHz.

Thank you!
Yours truly,
ASRock TSD]]> Tue, 12 Feb 2019 14:26:24 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60650&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60650 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60440&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60440 Author: bootpcanon
Subject: 10815
Posted: 01 Feb 2019 at 3:00pm

These screenshots of the system after updating the bios to 1.50 all default settings.]]> Fri, 01 Feb 2019 15:00:05 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60440&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60440 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60439&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60439 Author: bootpcanon
Subject: 10815
Posted: 01 Feb 2019 at 2:36pm

I updated the BIOS to version 1.5, with default settings the processor speed is 800 MHz. If in the bios, the item of CPU thermal trottling is disable the CPU frequency rises to 2.8, but the turbo boost does not work. Perhaps there are some settings you need to install? This screenshot is made during full load on the processor, version 1.5 bios, default settings, only item changed CPU Thermal Trottling is Disable. ]]> Fri, 01 Feb 2019 14:36:37 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60439&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60439 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60431&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60431 Author: ASRock_TSD
Subject: 10815
Posted: 01 Feb 2019 at 11:37am

Dear Bootpcanon,

Thank you for choosing ASRock.

Please update the latest BIOS P1.50 to try.
https://www.asrock.com/MB/Intel/Z390M-ITXac/index.asp#BIOS
We also test at our lab, when running the HyperPi 1 thread, i5-8400 can turbo to 4.0GHz.

Thank you!
Yours truly,
ASRock TSD]]> Fri, 01 Feb 2019 11:37:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60431&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60431 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60407&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60407 Author: bootpcanon
Subject: 10815
Posted: 31 Jan 2019 at 10:48pm

Help me. I have a motherboard asrock z390m-itx ac and a processor i5-8400. The problem i did not work turbo boost i tried different bios settings and different versions of it but no results. on the Internet I found a similar problem to a person, only he had a motherboard asrock z370m-itx ac and corrected a new version of the BIOS firmware. Maybe somebody knows some nuances in the configured bios? I wrote in technical support but I have not written anything yet. If someone has the same card write off how you work on a turbo boost]]> Thu, 31 Jan 2019 22:48:15 +0000 https://forum.asrock.com/forum_posts.asp?TID=10815&PID=60407&title=asrock-z390mitx-does-not-work-turbo-boost-i58400#60407