https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sun, 05 Apr 2026 23:34:42 +0000 Fri, 22 May 2020 12:39:12 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=14455 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=14455&PID=75741&title=turbo-boost-setting-in-mobo#75741 Author: Mike99
Subject: 14455
Posted: 22 May 2020 at 12:39pm

I have a B365M Pro4 mobo and it has more bios settings than I've ever seen! The CPU is an Intel i5-9400 with a base frequency of 2.90GHz and Maximum Turbo Frequency of 4.10GHz

The only thing I've seen regarding Turbo Boost is in BIOS > Advanced > OC Tweaker. It lists the following:

Target CPU / Cache / BCLK Speed: 4100 MHz / 3800 MHz / 100.0000 MHz

Target AVX2 Speed: 4100 MHz

Target Memory Speed: 2133 MHz

This looks like the 4100 MHz Turbo Boost is enabled.

But under "CPU Configuration"
Boot Performance Mode = Max Non-Turbo performance

The description says "it will keep CPU Flex-ratio till OS handoff." There is nothing in the manual that clarifies what that means. I'm guessing it means Turbo is not enabled during Boot. Is that correct? Should I leave that setting alone?

As a side question, why does the memory speed indicate 2133MHz when the RAM is 2666 MHz?]]> Fri, 22 May 2020 12:39:12 +0000 https://forum.asrock.com/forum_posts.asp?TID=14455&PID=75741&title=turbo-boost-setting-in-mobo#75741