How can I manually set my Vcore? Gaming K6 MOBO
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Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4941
Printed Date: 24 Jul 2025 at 12:04pm
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Topic: How can I manually set my Vcore? Gaming K6 MOBO
Posted By: Kanty
Subject: How can I manually set my Vcore? Gaming K6 MOBO
Date Posted: 25 Apr 2017 at 4:42am
| " rel="nofollow - Hi all, my temps are not where I want them to be on my 7700k with a liquid AIO H100iV2, and it's getting disheartening, and I have noticed that my V Core is bouncing all over the place from .640 to 1.32 under load; is there anyway of easily adjusting this? I should note that the processor goes to 4.5Ghz at 1.216 vcore, so I'd assume I could manually set that vcore and get good results, any help would be appreciated |
Replies:
Posted By: Kanty
Date Posted: 25 Apr 2017 at 4:48am
| I'd like to add when I put the processor maximum power to 99% at 4.24ghz the Vcore only goes as high as 1.184 volts |
Posted By: parsec
Date Posted: 25 Apr 2017 at 9:12am
Well, could be a Fatal1ty Z170 or Z270 Gaming K6, but that does not make much difference. The bouncing around VCore is caused by the various Intel CPU power saving features, Speedstep and the various C-States, C1E to C7. Intel has been using those since their 2nd generation Sandy Bridge processors, yours is a 7th generation processor. With those options enabled or Auto, completely normal behavior. Don't you see you core frequencies dropping down to 800MHz at times too? Unless you have the Windows Power Plan set to High Performance, or the Minimum Processor State in the power plan set high. Vcore changes along with the cores dropping to lower frequencies, again normal. No idea what your VCore setting is now, assuming Auto. Two ways to accomplish your goal, adjusting the CPU power saving options or using fixed voltage. To change the CPU power saving options, in the UEFI/BIOS, OC Tweaker screen, CPU Configuration screen, find the Intel SpeedStep Technology option, set it to Disabled. Next, in the Advanced, CPU Configuration screen, find CPU C States Support, and set it to Disabled. All the other C State options normally then disappear. Of course after disabling all those options, your CPU will run warmer at idle since all the power saving option are no longer working. That is also normal. Without touching the CPU Vcore Voltage option, in the OC Tweaker, Voltage Configuration screen, that will keep the CPU from down clocking under low load conditions, and the VCore from changing. Or you can keep the CPU power saving options enabled, and set CPU Vcore Voltage from Auto to Fixed Voltage, and select an appropriate value. If you select a too low VCore value, the PC won't boot or you'll get BSODs in Windows. The VCore values you posted are quite normal for an i7-7700K using Auto voltage, actually on the low side. The 1.184V at 4.24GHz is quite good, I don't understand why you think that is high, and in comparison to what? What would you expect it to be? ------------- http://valid.x86.fr/48rujh" rel="nofollow"> 
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Kanty wrote:Posted By: Kanty
Date Posted: 25 Apr 2017 at 9:23am
| Parsec, you may be misunderstanding me...I'm fine with it at 1.184 at 4.24ghz temps, my concern is that when under load the VCORE changes at a constant pace and I see they coincide with the temp fluctuations....for example I get the same temps at 4.7ghz and 4.5ghz at Auto VCore at around 65-70c under load playing a game. When I fixed my voltage to 1.215 I was getting 50-56c at 4.5Ghz but I noticed it wouldn't idle at a lower voltage than the fixed voltage. I know I sound confusing as I'm entirely new to this but I do fully believe these temp fluctuations have to do with the VCore as I've noticed the VCore on Auto go upwards of 1.3 but not much more than that. |
Posted By: Kanty
Date Posted: 25 Apr 2017 at 9:24am
| Z270 by the way. |
Posted By: Kanty
Date Posted: 25 Apr 2017 at 9:28am
| " rel="nofollow - I shouldn't have to set my processor at a lower frequency to achieve good temps with a H100iv2. When I tested fixed voltage at 1.215 I was able to get between 50-56c while playing games at 4.5ghz as opposed to setting it to auto and it was running between 65-70c, clearly there's something the matter correct? I just didn't like leaving fixed voltage because of the idle voltage wouldn't go down. |
Posted By: Kanty
Date Posted: 25 Apr 2017 at 10:15am
| " rel="nofollow - ? |
Posted By: parsec
Date Posted: 25 Apr 2017 at 10:31am
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" rel="nofollow - When you use the Auto VCore setting, you are using Adaptive voltage, which will allow the processor to select the VCore. That causes the high VCore values you don't like. That's simply how Adaptive voltage works. But it also allows the VCore to go down at idle. You've seen the differences in CPU temperature using Auto and Fixed voltage, right? Auto causes a higher peak VCore, right? More voltage means more heat and higher temperatures regardless of the CPU cooler. If you were using a custom water cooling system that has many times more liquid volume in it than an H100, it would do the same thing with the CPU temperature, but to a lesser degree. With Auto/Adaptive voltage, the VCore can change. Fixed voltage is just what it is called, fixed, it won't change, it is set to a specific amount. Fixed voltage is not a maximum voltage, it's a voltage that will not change. Yes it does not go down at idle, that's how fixed voltage works. Try this: Set VCore to Offset, and you'll then see an Offset Voltage setting appear below it. Leave it on Auto and see what you get for a VCore. ------------- http://valid.x86.fr/48rujh" rel="nofollow">
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Posted By: Kanty
Date Posted: 25 Apr 2017 at 10:37am
| Okay I will try that and let you know what happens parsec, thanks for the help. Please keep in contact, is like to solve this problem once and for all. |
Posted By: Kanty
Date Posted: 25 Apr 2017 at 11:09am
| Parsec, every time I try to put the offset at auto it always says -100 in the "offset voltage (mv)" box |
Posted By: Kanty
Date Posted: 25 Apr 2017 at 11:25am
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Posted By: Kanty
Date Posted: 25 Apr 2017 at 11:27am
| " rel="nofollow - those are my temps under full load by adata64 with offset voltage at -25mv...does this appear stable? if not, what changes should I make? |