Intel Motherboards - ASRock X99 OC Formula/3.1 C-State Problem

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ASRock X99 OC Formula/3.1 C-State Problem

Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=812
Printed Date: 21 Dec 2024 at 9:51pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: ASRock X99 OC Formula/3.1 C-State Problem

Posted By: Blkout
Subject: ASRock X99 OC Formula/3.1 C-State Problem
Date Posted: 11 Sep 2015 at 10:43pm

Just received a brand new ASRock X99 OC Formula/3.1 MB, 5820K CPU, EIST is enabled in the BIOS. For some reason, every time I enable C-State support in the UEFI and reboot, the MB disables C State support. About 1 out of every 5 reboots C-State support will remain enabled. This is using the latest 1.20 BIOS. Very frustrating since my CPU won't down clock at idle.

My ASRock X99X Killer MB doesn't have this issue.

Is this is a known issue?

Replies:

Posted By: Xaltar
Date Posted: 11 Sep 2015 at 11:43pm

Have you tried clearing CMOS and setting C-states again? Sometimes UEFIs can get sticky with settings, usually a clear CMOS will clean out the cobwebs and sort it out.

Posted By: Blkout
Date Posted: 12 Sep 2015 at 5:20am

I have not tried that yet. Will do and report.