AMD Motherboards - X399 taichi & 2950x High idle temps

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X399 taichi & 2950x High idle temps

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=9741
Printed Date: 17 Jul 2025 at 6:24am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com

Topic: X399 taichi & 2950x High idle temps

Posted By: axisassasin
Subject: X399 taichi & 2950x High idle temps
Date Posted: 22 Sep 2018 at 7:48pm

" rel="nofollow - Hi,

I am using a 2950x and ASRock x399 taichi. I am getting idle temps in the motherboard bios (3.30) of 66 Celsius at idle.

Looking at the ryzen master software the temperature is in low 30s.

I realise that there is a 27 degree offset from Tctl to Tdie , But if the motherboard is reporting the higher temperature

would that not mean that thermal throttling will happen much sooner than it would if the correct temperature was being reported?

Replies:

Posted By: ZDanger
Date Posted: 26 Sep 2018 at 12:21am

I'm in the same boat with my X399m and a 2950x. BIOS reports idles in the high 60s when I have 600mm of radiator space and plenty of pump. My 1080Ti reports 26c at idle... Unfortunately, for whatever reason, I can't boot into Windows using my U.2 drive so I'm running Ubuntu. The only reporting I'm able to get so far is tctl so Ubuntu is reporting the same temps as the BIOS. I'm going to temporarily install a SATA SSD and install Windows and check what Ryzen Master says.

Posted By: blurb2m
Date Posted: 27 Sep 2018 at 12:14am

" rel="nofollow - Came across this thread looking for where to find power supply settings in BIOS after seeing some results over on the Unraid forum.

Johnnie.Black mentions: Are you using the Ryzen specific settings? It's not on your go file, though most boards have now a bios setting for that, as long as using a current bios, like "power supply idle control" or similar, it should be set to "typical current idle" or similar.

https://forums.unraid.net/topic/74408-server-freezing/?tab=comments#comment-685832

Posted By: ssateneth
Date Posted: 30 Sep 2018 at 7:07am

you are not getting high idle temps. this is a fake issue. threadripper reports 27C higher than actual. subtract 27C from temperature to get real temperature. ryzen master will show correct temp and Tdie in hwinfo64 shows correct temp

-------------
MB: X399 Taichi, UEFI L3.32
VGA: EVGA 1080 Ti FTW3
PSU: Seasonic PRIME 1300 W PLATINUM
CPU: AMD Ryzen Threadripper 2950X
MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW

Posted By: HREN
Date Posted: 18 Nov 2018 at 10:08pm

Hi. I have Asrock x399 and 2950x. The idle temp in BIOS is around 65. Actual temp is 40. Where is Asrock support??? WTF

Posted By: WormSlayer
Date Posted: 20 Nov 2018 at 6:12am

Just built an X399 Taichi-based system, and noticed the same thing, but have much bigger problems to solve first...

Posted By: ssateneth
Date Posted: 21 Nov 2018 at 5:50am

guys, stop reporting "high idle temps". it is a fake issue, not real. you will not throttle. I pushed to 110C "fake" temperature, no throttle, because that is only 83C actual temperature.

-------------
MB: X399 Taichi, UEFI L3.32
VGA: EVGA 1080 Ti FTW3
PSU: Seasonic PRIME 1300 W PLATINUM
CPU: AMD Ryzen Threadripper 2950X
MEM: 4x16GB, 3600MHz G.Skill Trident Z F4-3600C17Q-64GTZKW

Posted By: peterp
Date Posted: 15 Dec 2018 at 6:46am

same situation. do you have tips on how to handle fan settings? what is the best play, given my wraith ripper is running like 70% in idle.

Posted By: neoavalon
Date Posted: 23 Feb 2020 at 4:34am

I know this is an old thread but I had the same worry when I was originally digging around the BIOS in my new X399 Taichi + 2950X build. The CPU temperature was constantly hovering around 69 degrees. But when I'd boot into Ubuntu 18.04.4 (5.3.0-40 kernel) I would see a very normal die temperature (output from "sensors") and noticed the "Tctl" showed more inline with what I saw in the BIOS (the 27 degree offset).

The post above about setting "Power Supply Idle Control" to "Typical current idle" actually solved a freezing issue I was seeing on this system shortly after booting it and leaving it to idle. I had found that suggestion [URL=https://www.reddit.com/r/Amd/comments/cik3q1/can_we_recognize_broken_c6_states_in_all_of_zen/]here[/URL] as part of a discussion on C6 power state issues for Ryzen CPUs