Successful manual voltage OC but adaptive mode fails?

wbattel4607

Honorable
Jan 28, 2014
83
0
10,660
This question exists in many many many other threads but each of their solutions had no affect for me.

I have a 6700K on an Asus Z170-AR, and got a stable (at least so far, more extensive tests still pending) OC of 4.7GHz @ 1.32V on manual core voltage. Now, 1.32 isn't crazy high but I know the CPU won't need it most of the time since CPU load will rarely reach 100%. The solution to this is typically Adaptive CPU Voltage, which is a setting offered in the Asus AI Tweaker BIOS. I am attempting to switch over to Adaptive from Manual voltage- but despite the computer POSTing, it never can get windows to start, it always freezes at the first Windows load screen right after the ASUS POST screen. This appears to be a misvoltage to the CPU, but, according to the other threads I've read, I thought I'd set it correctly. See details below.

Original Settings:
- CPU Core/Cache Voltage: Manual Mode
-- CPU Core Voltage Override: 1.320
This worked.

New Settings:
- CPU Core/Cache Voltage: Adaptive Mode
-- Offset Mode Sign: +
-- Additional Turbo Mode CPU Core Voltage: 1.320
-- Offset Voltage: Auto
This did not work.

Things I have tried to fix:
1. Set CPU Core/Cache Boot Voltage to 1.1
2. Set Offset Voltage to 0.001
3. Set Offset Voltage to 0.01 and Additional Turbo Mode CPU Core Voltage to 1.31
4. Set Additional Turbo Mode CPU Core Voltage to 0.12, because stock voltage is 1.2 and "additional" voltage seemed like it would just be on top of that 1.2 but the minimum value you can enter is 0.25.
5. Enable Speedstep and CStates- this lowered my idle CPU frequency but not voltage (which makes sense because I couldn't ever boot with adaptive voltage, I was still in manual.)

Any ideas? This is my first OC and my first build. Thanks. Let me know if more info is needed.

EDIT: Also, when in Manual mode, my BIOS says the CPU voltage is 1.312. When in Adaptive, it says 1.04. I'm sure the BIOS doesn't need the full 1.32 I set in Adaptive, but is 1.04 reasonable?
 
Solution
Why not just leave it since you achieved a great OC. Manual voltage stable != adaptive voltage stable, your testing has suggested this. When chip longevity is measured in decades and Intel has stated no permanent damage will happen operating at voltage tested up to 1.5V (even immediately above that is not an automatically guaranteed fail), it seems like a unnecessary source of concern to dial down voltage.

And if it helps you to know more about tested voltage range, Siliconlottery regularly torture tests their chips at 1.425V to great success.

wbattel4607

Honorable
Jan 28, 2014
83
0
10,660
Okay, let's try something else then. If I can't use adaptive mode, can I either...

A: Try Offset mode so the chip "maxes" out at no more than what it needs for my OC (1.315V), and then throttles down to what it needs for idle (0.8V I believe);
or
B: Leave it at manual 1.315V 24/7. Is this safe? I've used it in manual mode for several days and everything is working, but for the long run I have no idea if 1.315V is safe for longevity.


Any thoughts?
 

wbattel4607

Honorable
Jan 28, 2014
83
0
10,660


I'm still using manual mode, but I am following a potential lead and we'll see what happens.
 

chenuki

Respectable
May 11, 2016
253
0
1,960
Why not just leave it since you achieved a great OC. Manual voltage stable != adaptive voltage stable, your testing has suggested this. When chip longevity is measured in decades and Intel has stated no permanent damage will happen operating at voltage tested up to 1.5V (even immediately above that is not an automatically guaranteed fail), it seems like a unnecessary source of concern to dial down voltage.

And if it helps you to know more about tested voltage range, Siliconlottery regularly torture tests their chips at 1.425V to great success.
 
Solution

ajthemacboy

Reputable
Jul 31, 2014
115
0
4,690
If my C-States worked properly I wouldn't care about sticking with manual voltage, but they don't seem to work at all; my voltage stays at the maximum 24/7 even on the "Power saving" plan. Running more voltage than needed constantly means higher idle temperatures and shorter lifespan.
 

wbattel4607

Honorable
Jan 28, 2014
83
0
10,660


I am now planning to stay on manual mode since my 1.315V is well below concerning. I'd hoped for adaptive to work, mostly for peace of mind, but I've come to terms with it and manual will do the job without me needed to mess with it.



Enabling SpeedStep and C-States will only affect the CPU frequency, not the voltage. The voltage, in turn, is supposed to dial down when frequency is lowered when not in manual mode., I was having too hard a time with this and settled on manual voltage with C states and Speedstep still enabled. In this way, I achieve power reduction on light load while maintaining a constant healthy voltage that all CPU loads can work with without issue.