Z170M Extreme4 : undervolting limitations
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=1910
Printed Date: 27 Jun 2024 at 12:16am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Z170M Extreme4 : undervolting limitations
Posted By: propergol
Subject: Z170M Extreme4 : undervolting limitations
Date Posted: 03 Feb 2016 at 7:35am
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Hi, I don't kown if it is a hardware or bios limitation, but on my I3-6100T, I can't lower the offset CPU voltage more than -100mV. My CPU is 100% stable with -100mV (idle, mid load, full load), 48h x 3 tests... : STABLE  This is my home server and I am trying to get as low as possible power. Same for the RAM : currently the lowest aviaable voltage is 1.2V, but I am pretty sure that my RAM can runs 1.1V maybe 1.0V. I would love to see next bios allowing wider range of voltage control, but again I don't know if it is or not a hardware limitation.
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Replies:
Posted By: parsec
Date Posted: 20 Feb 2016 at 2:19pm
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Do you have all the CPU power saving options enabled? SpeedStep in OC Tweaker? All the C States in the Advanced -> CPU Configuration screen? Set them to Enabled, Auto is not necessarily Enabled. Try downloading and installing this program from Intel, their Extreme Tuning Utility, which is mainly designed for over clocking: https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-" rel="nofollow - https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU- The over clocking features may be unavailable, but there is an offset voltage adjustment that allows far more than -100mV. This only works in Windows, but you can save any changes to the CPU voltage, etc, in a profile, which you can load and apply quickly anytime. Or even pair the profile with software. Run the software and the profile will be applied automatically. Did you ever experiment with a low manual voltage? It may not seem to change when the CPU is at idle, but if you are monitoring the VID (most programs display the VID) the actual VCore may be much lower. Given what I have seen, Haswell processors may use less power than Skylake. Haswell VCore would go to zero volts, I don't see that with Skylake. That might be caused by a difference in their architecture that the monitoring programs cannot detect. ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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