Intel Motherboards - Z890 Taichi: Package C-States not working

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Z890 Taichi: Package C-States not working

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=113349
Printed Date: 07 Oct 2025 at 3:09am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: Z890 Taichi: Package C-States not working

Posted By: sentio
Subject: Z890 Taichi: Package C-States not working
Date Posted: 06 Oct 2025 at 9:27pm

Z890 Taichi: Package C-States not working

Hello! I recently purchased a Z890 Taichi.

I noticed that the system PACKAGE C-States DO NOT WORK at all. They are reported as 0 or absent by ThrottleStop or HWInfo64. The PER CORE C-States DO WORK.
I have enabled all relative C-States options in the BIOS, I have also enabled ASPM (which do seem to work).

I have read in another thread, a user being Stuck at C2 or C3, but I don't even get there.

I am interested in the Package C-State because I like low system power use when idle. I am currently at 60W. In my experience with other mobos, I should be able to get 25W~30W.

My setup: z890 taichi, Intel 265F, 2x16gb DDR5 ram, SN770 NVME, 3060 GPU. No overclock, neither of ram nor of cpu.

Replies:

Posted By: sentio
Date Posted: 07 Oct 2025 at 12:42am

Forgot to add that I am running the latest BIOS. V3.09