trouble with voltage on Maximus IX Hero 1151

[trt740]

I am having trouble in the bios with my new board and a 7700K. I using the newest bios. If you can help give me some ideas that would be great. Under load my chip voltage jumps to 1.25v and I cannot get it to undervolt. No matter what under load it jumps to that setting. I have manually set the voltage several times and it still jumps up under load. It like having reverse droop. It is overvolting the chip. It just started doing this. I pulled the cmos battery and reset the bios. I have turned most of the enhancements off that I can find. Any help would be good.

Also another stupid glitch is my wireless mouse and keyboard do not work until after the initial boot after a bios reset and they do not work well. I have to use a wired keyboard to first set up the bios, and this is why I hate rebuilds.

 

[Kursah]

What level is your LLC set to? I know on my Z87 1150, that it would overvolt at higher levels, I believe 6,7 and 8 or AUTO (8) would do this. You might look there.

Can you take screenshots of your UEFI? Most allow screenshot features with F12 or similar and save to your C drive or sometimes let you choose. Might be worth doing so we can see what you have to work with.

I'm sure some of the adjustments have changed since the Haswell era for CPU stuff, especially voltage-wise. IIRC Haswell has the VR on-die, but Sky and Kaby do not, being moved back to the board...I could be wrong though...just going off of memory atm.

When you state under load, what loads are you confirming with that statement? All loads? Gaming, stress test, system? Or just stress test? If so, are you using a stress test that enables AVX? If so AVX instructions will force your CPU to overvolt. Mine shoots up to 1.31v from 1.26v.

So that might be worth checking out too. I bet @cadaveca will have some useful information coming very soon. His Haswell OC article from years back was very useful and maybe he'll do similar for KL.

 

[trt740]

What level is your LLC set to? I know on my Z87 1150, that it would overvolt at higher levels, I believe 6,7 and 8 or AUTO (8) would do this. You might look there.

Can you take screenshots of your UEFI? Most allow screenshot features with F12 or similar and save to your C drive or sometimes let you choose. Might be worth doing so we can see what you have to work with.

I'm sure some of the adjustments have changed since the Haswell era for CPU stuff, especially voltage-wise. IIRC Haswell has the VR on-die, but Sky and Kaby do not, being moved back to the board...I could be wrong though...just going off of memory atm.

When you state under load, what loads are you confirming with that statement? All loads? Gaming, stress test, system? Or just stress test? If so, are you using a stress test that enables AVX? If so AVX instructions will force your CPU to overvolt. Mine shoots up to 1.31v from 1.26v.

So that might be worth checking out too. I bet @cadaveca will have some useful information coming very soon. His Haswell OC article from years back was very useful and maybe he'll do similar for KL.

Under prime for the load question and I will check on the screen shot my my mouse and keyboard are acting weird in the bios. LLC is on auto which I think is set to 8. I turned off one of the 18 million enhancement Asus has on this board and it dropped a bit. Asus does this shit when first release board revisions. I still like the board and to be fair it just came out.

Hey Dave little help here!!!

 

[Kursah]

What CPU voltage mode are you using? Offset? Adaptive?

Adaptive is tricky, and for me there was another setting that affected the FIVR (fully integrated voltage regulator iirc)...again your CPU might not have that. But if I enabled EPU PowerSaving that would get locked at a specific variable, 1.70v no matter what I changed. Makes me wonder if you have a similar setting here still.

Also it appears that standard ASUS UEFI screenshot duty is relegated to the F12 key. So if you can get your KB issues sorted, some screens might help.

I would suggest tuning your CPU first with offset rather than adaptive. Let me explain.

Offset is simply that and likely what you're used to. Some board used it back in the Core2 days even. It was simply +/- X.XXXv from the current VID voltage.

Adaptive, at least on Haswell is a different animal that encapsulates Offset with further features.

So I like to undervolt if I'm gonna run stock. I found that with my main rig's 4790K, that I could undervolt around -0.075 or something along those lines. That was great for me, dropped my temps a little, dropped my power consumption a couple of watts, good deal.

Adaptive allows for more finite adjustment for what happens in the turbo-spectrum of the CPU clocks. Meaning, I was able to keep my undervoltage with some number manipulation.

So first off, when Adaptive is enabled you have your baseline voltage, or VID, then your Offset which affects VID and Adaptive variables and then Adaptive which affects turbo and final voltage.

I had to do two things, first find my stable stock undervolted value of -.060v, and my OC'd overvolted value which came to 1.260v under load and what I needed to aim for. Then use Adaptive to combine them. So on my Asus Z87 Pro, which is ancient now..going on 4 years old in June...LOL. I have these settings and options:

CPU Core Voltage: Adaptive Mode

Offset Mode Sign: -

CPU Core Offset Voltage: 0.060v​

Additional Turbo Mode CPU Voltage: 1.320v
Total Adaptive Mode CPU Voltage: 1.260v
​

So what you see is I start with a negative offset of -.060v, that brings the entire voltage range down by that value. Then I tell the IVR that I want 1.320v in turbo mode, which starts above 4.0GHz on my particular CPU. Stock turbo is 4.4Ghz, I have mine set to 4.8GHz with a 48X multi. With the adaptive setting in-place, it comes out to 1.260v, 1.320-0.060v=1.260v.

If something is not set right here, your board may ignore the values and boot at stock values. That is what my board does...I used to think the "Additional Turbo Mode CPU Voltage" was like an additional offset...made sense to me. But Asus decided that is a total voltage value but didn't really explain it in that way. Once I solved this, I solved my voltage issues as well when OC-ing my 4790K.

So hopefully that helps if you are in-fact messing with Adaptive voltage.

 

[cadaveca]

Hey Dave little help here!!!

To me it sounds like OS might have been abused a little. Unfortunately I am not familiar enough with BIOS yet to be able to say "do this".

I think Turbo voltage is fairly high, maybe it cannot be overridden in certain power modes. BIOS might need some maturity. Try LLC 5 or 6.

It funny because these are still basically SkyLake boards, but the KabyLake side of this has some different behavior that I just can't place my finger on stability-wise. It is not until I have had quite a few boards and different chips and memory all tested that usually I find my "groove", but this time I still haven't found it just yet

His Haswell OC article from years back was very useful and maybe he'll do similar for KL.

I will likely do another time time around..

 

[trt740]

What CPU voltage mode are you using? Offset? Adaptive?

Adaptive is tricky, and for me there was another setting that affected the FIVR (fully integrated voltage regulator iirc)...again your CPU might not have that. But if I enabled EPU PowerSaving that would get locked at a specific variable, 1.70v no matter what I changed. Makes me wonder if you have a similar setting here still.

Also it appears that standard ASUS UEFI screenshot duty is relegated to the F12 key. So if you can get your KB issues sorted, some screens might help.

I would suggest tuning your CPU first with offset rather than adaptive. Let me explain.

Offset is simply that and likely what you're used to. Some board used it back in the Core2 days even. It was simply +/- X.XXXv from the current VID voltage.

Adaptive, at least on Haswell is a different animal that encapsulates Offset with further features.

So I like to undervolt if I'm gonna run stock. I found that with my main rig's 4790K, that I could undervolt around -0.075 or something along those lines. That was great for me, dropped my temps a little, dropped my power consumption a couple of watts, good deal.

Adaptive allows for more finite adjustment for what happens in the turbo-spectrum of the CPU clocks. Meaning, I was able to keep my undervoltage with some number manipulation.

So first off, when Adaptive is enabled you have your baseline voltage, or VID, then your Offset which affects VID and Adaptive variables and then Adaptive which affects turbo and final voltage.

I had to do two things, first find my stable stock undervolted value of -.060v, and my OC'd overvolted value which came to 1.260v under load and what I needed to aim for. Then use Adaptive to combine them. So on my Asus Z87 Pro, which is ancient now..going on 4 years old in June...LOL. I have these settings and options:

CPU Core Voltage: Adaptive Mode

Offset Mode Sign: -

CPU Core Offset Voltage: 0.060v​

Additional Turbo Mode CPU Voltage: 1.320v
Total Adaptive Mode CPU Voltage: 1.260v​

So what you see is I start with a negative offset of -.060v, that brings the entire voltage range down by that value. Then I tell the IVR that I want 1.320v in turbo mode, which starts above 4.0GHz on my particular CPU. Stock turbo is 4.4Ghz, I have mine set to 4.8GHz with a 48X multi. With the adaptive setting in-place, it comes out to 1.260v, 1.320-0.060v=1.260v.

If something is not set right here, your board may ignore the values and boot at stock values. That is what my board does...I used to think the "Additional Turbo Mode CPU Voltage" was like an additional offset...made sense to me. But Asus decided that is a total voltage value but didn't really explain it in that way. Once I solved this, I solved my voltage issues as well when OC-ing my 4790K.

So hopefully that helps if you are in-fact messing with Adaptive voltage.

My voltage is set to Manual 1.2v. I will try the lower LLC and lower the offset.


Update now cpuz will not read the voltage that block is blank when I dropped the voltage LLC to 4 and the power CPU Current Capability to 120 from 140

 

[Kursah]

I wonder if you shouldn't roll back to the previous UEFI version? Might have bugs in this one...or were issues worse before?

 

[trt740]

I wonder if you shouldn't roll back to the previous UEFI version? Might have bugs in this one...or were issues worse before?

It is not terrible but as I increase the clock from 45 to say 48 the board increases the voltage on its own like adaptive is on. It happens as soon as my turbo engages. I also cannot get the turbo to stay locked. Even with speed step off. It will drop to 4.2 and jump to turbo underload. There is a way to go back to the prior bios. However Asus Suiteii software containing the flashback tool is malfunctioning and my prior bios is not listed on the Asus web page. Heck it's so new no support is listed on the USA site only on the global, and only one bios. I'm not sure if my motherboard auto saves the prior bios. I'm not home this second but my old Maximus extreme did in the old days. Also typing on my iPhone so pardon any stupid typos. I could ask Asus to send me one but good Fing luck with that.

My bios is in this video