X570 Gaming X - bios H/W high Vcore and high temp
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=14146
Printed Date: 13 Aug 2025 at 11:10pm
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Topic: X570 Gaming X - bios H/W high Vcore and high temp
Posted By: John22
Subject: X570 Gaming X - bios H/W high Vcore and high temp
Date Posted: 20 Apr 2020 at 9:54am
Hello,
Each time pc boots, I experience noisy full speed fans for few seconds, looking like full speed occurs till windows starts. Then it goes directly to almost low speed and silence. I tried setting bios fans with no change in this behavior. I looked at the bios H/W monitor and saw really strange data : Vcore which is idle is 1.472 V and temp is 56.5oC as expected with such a vcore. What could bring 1.472v in bios at no load ! By itself could that explain the full speed fans at startup ?
I'd really like to get rid of the full speed fant at startup, it's really annoying. I hope this could point to a problem somewhere explaining this behavior
Thanks J Guy
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Replies:
Posted By: John22
Date Posted: 20 Apr 2020 at 9:59am
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forgot few things ... X570 Gaming X, W10 pro up to date, 3900X cpu, 2080Ti Gpu, 32 GB memory. As soon as I open Ryzen Master, core temp is 38-40oC. So really strange to see bios with higher temps.
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Posted By: ThreeDee
Date Posted: 20 Apr 2020 at 10:08am
are you running the 2.80 BIOS? (phantom gaming x)
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|Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15|
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Posted By: Synapse
Date Posted: 20 Apr 2020 at 12:00pm
All of this is normal.
The fans blasting at full speed during (re)boot is normal. This happens before the UEFI loads the settings and starts PWM control. Also, the CPU is used quite actively during the OS boot, so it's expected that the CPU fan will be running faster that at idle.
High Vcore is normal assuming this is not set manually. Voltage is only 1 piece of the equation, the other is power. Modern multicore CPUs can apply high voltage to boost to higher clocks if this does not break the power budget, with 1 or 2 cores active while the rest are idling, as it happens to be when you enter the UEFI - it probably tries to push as much FPS as possible drawing the UI. 56 degrees is totally fine with air cooling.
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Posted By: John22
Date Posted: 21 Apr 2020 at 2:35am
Yes I'm running 2.80 BIOS.
Synapse: normal ? with every default setting in the BIOS ? You seem to mix many things .. I'm in BIOS : NO OS loading, NO higher clocks, NO high FPS, NOTHING .... PCU IS IDLE. BIOS is pushing CPU at 1.472 when it's idle ???? It's appropriate with high CPU usage, it's not in the BIOS. Sure that can be done but it just does not make any sense to do it.
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Posted By: Synapse
Date Posted: 21 Apr 2020 at 8:18am
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I have X570 Taichi, which is basically the same board as Phantom Gaming X, sans 2.5G LAN, and 3800X. When I checked the BIOS, Vcore was reported 1.344v, and the CPU temp was 46C right after cold start, with liquid cooling. I booted into Windows and started Ryzen Master, and when the system became idle, RM reported Vcore in low 1.2v ranges, and the temp in mid 30s. The Vcore is jumping into 1.4v ranges all the time though when there's even slightest demand for CPU.
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Posted By: John22
Date Posted: 05 Aug 2020 at 2:27am
Synapse,
New 3.2 Bios fixed the problem ... I reported the problem to Asrock and they fixed it because it was a real non sense. So, when you're not really aware about something not to say when you know nothing, better to not answer questions in saying things that don't make any sense.
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