Z790M + 13600K (no E-Core) = idle CPU at 1.35v
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=38706
Printed Date: 27 Sep 2024 at 10:32pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z790M + 13600K (no E-Core) = idle CPU at 1.35v
Posted By: xtraco
Subject: Z790M + 13600K (no E-Core) = idle CPU at 1.35v
Date Posted: 14 May 2024 at 8:17am
Hello,
this is regrading 13600K on ASRock Z790M PG Lightning/D4.
I tried to check how the system behaves with E-Cores turned off - responsivness increased under moderate load but there is strange effect (according to LibreHardwareMonitor):
- at idle time motherboard sets voltage on CPU package of around 1.35..1.4V and that makes power consumption of CPU package at around 25..30W at absolutely idle state.
- under heavy load CPU voltage gets lower to around 1.15 .. 1.2v.
This is strange - I expect it should be opposite: at idle time voltage is near 1.0V and under load - around 1.3V.
This happens with default BIOS setting (v11.02).
...
With both P-Core and E-Cores turned 'on' everything seems normal:
- at idle power consumption is below 10W and voltage is around 0.9V
- under heavy load - voltage is up to 1.4V with power up to 250W
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Replies:
Posted By: KeizerGamer
Date Posted: 25 May 2024 at 2:25am
I have the same MOBO, it is purely due to the P-Cores taking up all the extra work. Also, if you haven't done so, theres a BIOS update for our MOBO, v11.04.
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-Stephen
For when you think you have enough, add some more
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