Intel Motherboards - C-States not working on Z370 Gaming K6

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C-States not working on Z370 Gaming K6

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=7641
Printed Date: 03 Aug 2025 at 12:34pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: C-States not working on Z370 Gaming K6

Posted By: Radical_53
Subject: C-States not working on Z370 Gaming K6
Date Posted: 11 Feb 2018 at 5:32am

" rel="nofollow - I'm having trouble with the c-states on this board, using a 8700k and the current 1.40 bios release.

No matter how I set up the energy saving options in bios, "auto" or "enabled", the CPU won't enter any of the lower c-states. C3-C7 definitely don't work so far.

I can see clockrate changes, voltage changes, but the parts of the CPU never turn off.

I tried installing the current Management Engine, didn't help either. Windows 10 is the most current version also.

Any ideas what could cause this? Thanks!

Replies:

Posted By: Cata79
Date Posted: 11 Feb 2018 at 4:51pm

" rel="nofollow - Are you on high performance windows power plan?

Posted By: Radical_53
Date Posted: 19 Feb 2018 at 3:42am

No, balanced usually. Even with no load on the CPU, I don't see any lower c-states-

Posted By: Cata79
Date Posted: 20 Feb 2018 at 2:09pm

make sure that in advanced power settings, minimum processor state is not at 100%. Sometimes windows changes this value to 100% because f**k logic.

Posted By: Radical_53
Date Posted: 28 Feb 2018 at 12:13am

No, that's at 5%. I tried 0% also, but it didn't change anything.

Also, the energy report tells me that no selective power saving doesn't work for any of the USB ports.
I must admit that they do turn off, but then some of them won't turn on again anymore (I have to re-plug my stuff to get them workingm, quite annoying).