https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 28 Apr 2026 21:37:37 +0000 Wed, 03 Sep 2025 05:59:28 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=113317 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=113317&PID=198901&title=z890-pro-rs-wifi-cstates-and-turbo-issue#198901 Author: Curvin
Subject: 113317
Posted: 03 Sep 2025 at 5:59am

Hi,

New to AsRock motherboards, currently testing and qualifying a Z890 Pro RS WiFi with an i9 Ultra 285K, and on disabling the CPU C-States when tweaking my CPU power/clocking settings, I have noticed that it stops the CPU from turbo clocking as it should, and does not clock above the base clock (3.6Ghz).

I build workstations, so I disable EIST/SpeedShift/C-State setting as a rule, and on other Z890 boards it will raise the base clock to the All Core Turbo, which is the normal and expected behavior. Something I have experienced and confirmed over several generations of Intel chipsets, including Z890. On the AsRock board however, disabling the C-States with those other settings disabled only allows max base clock ?

Is there something obvious I am missing ?

Any suggestions advise greatly appreciated.

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